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Research & Insights

Learn more about evidence-based approaches to strengthening and diversifying your teacher workforce with NCTQ’s reports, guides, and articles.

Solving for Math Success
  • Elementary Math
  • Solving for Math Success

    Math skills are critical for students’ success in other subjects and later in life, yet far too many teacher prep programs fail to give aspiring teachers the essential knowledge they need to be effective math teachers—undermining student learning before the first lesson even begins.

    April 8, 2025

    What can California, Texas, and Washington, D.C. teach us about how to diversify the teacher workforce?
    A smiling teacher kneeling beside a pupil's desk
  • Teacher Diversity
  • What can California, Texas, and Washington, D.C. teach us about how to diversify the teacher workforce?

    Nationally, the diversification of the teacher workforce is slowing compared to the diversification of college-educated adults, but California, Texas, and Washington, D.C. are bucking that trend. Explore what factors contribute to their relatively high rates of teacher diversity and how their policies and practices will likely affect teacher quality.

    February 1, 2025

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    Special Election 2014 Edition

    Special Election 2014 Edition

    In this week’s TQ News Extra we have a special Election 2014 edition to take stock of races that are sure to influence education policy in the coming years.  

    November 6, 2014

    October 2014: Teacher Leave
  • Teacher Leave & Benefits
  • October 2014: Teacher Leave

    October’s Teacher Trendline focuses on teacher leave. We take a close look at sick and personal leave, as well as policies allowing teachers to carry over leave and those that differentiate the amount of leave teachers receive depending upon their experience.

    October 31, 2014

    Contract Round Up

    Contract Round Up

    Today’s latest installment in our series on new contracts and other policy changes in NCTQ’s Teacher Contract Database, will highlight a few of the changes that jumped out at us in six districts: Indianapolis, Albuquerque, Cleveland, Rochester, Anchorage and Christina (DE). 

    October 27, 2014

    A call to higher educators: Let’s have an honest debate about teacher prep
  • Teacher Prep
  • A call to higher educators: Let’s have an honest debate about teacher prep

    Most people who took
    the time to read NYT Motoko Rich’s article about the training methods used by Aspire
    charter schools in its teacher residency probably reacted with a
    “makes-sense-to-me” shrug of their shoulders. Of course it’s a
    good idea to tear down teaching’s inherent complexities into manageable chunks
    and have novices practice each to mastery. After all, it’s what other
    professions do when they train their apprentices.

    If that was your reaction, maybe you would be surprised to learn that such
    methods ignite passionate, even vehement, disapproval in much of the teacher
    preparation field.

    Many years ago, it was decided that teacher education was about forming teachers – not training them. In
    other words, the job of the true teacher educator was to hone a young teacher’s
    intuitions so well that she could somehow walk into any classroom anywhere and
    immediately intuit how to teach.

    There’s little evidence that such an approach works, judging by new teachers’
    complaints and the learning loss that takes place in most new teachers’
    classrooms. The reality is, we need a world-class teacher training system in
    this country and it has to be premised on more than a 22-year-old’s intuition,
    however sharp. We have to provide training that gives teachers what they
    need to lead their classrooms the moment they graduate. We know that there
    are many proven, research-based tactics that are not being implemented
    systematically in our teacher prep programs. We need to change that thinking — and
    we need to shift the “intuitive” approach to the “training”
    approach.

    How do we do that? It starts with asking aspiring teachers, school
    districts, taxpayers, public school educators and parents their
    opinion. And it requires those in the teacher prep field to acknowledge
    that it is indeed their responsibility to train teachers.

    Higher education leaders, opinion makers and policymakers should be having a
    fair, honest academic discussion about how best to train teachers. That will
    require all parties coming together and listening to each other about what
    teachers truly need.  We can and must do better when it comes to preparing
    teachers for the classroom. It is not too late to make it happen.

    October 16, 2014

    Benefits of ambivalence: A new tenure policy holds promise for student gains

    Benefits of ambivalence: A new tenure policy holds promise for student gains

    Policy fixes are necessary to lay the groundwork for change, but it’s
    in the implementation of those policies where the rubber meets the road.
    Since 2009, a lot of states have made changes to their tenure laws,
    including New York. In that state, new policy changed what happens after new
    teachers complete the three-year probationary period, requiring school leaders
    to review the “candidate’s effectiveness over the applicable probationary
    period in contributing to the successful academic performance of his or her
    students” before tenure is granted. Did that new law and its dogged
    implementation by Joel Klein, et al., in New York City make any
    difference? 
    Perhaps so. Research released by Susanna Loeb, Luke Miller and James Wyckoff found not only that the district currently
    awards tenure to far fewer teachers than it once did, but also that the quality
    of the overall teacher applicant pool showed a marked improvement: a struggling
    teacher who left the system after the district decided to delay its tenure
    decision was, on average, replaced by a measurably better teacher.
    Interestingly, when the district told teachers it was not ready to make
    a tenure decision (delaying for a year as the law allows), those teachers were
    50 percent more likely to transfer schools and 66 percent more likely to leave
    the system than teachers who were awarded tenure. These findings showcase that
    just the act of delaying the tenure
    decision can result in presumably weaker teachers self-selecting an option that
    may be better suited for them (and consequently their students).
    New York is particularly interesting because
    districts in the state can keep delaying their tenure decisions for as long as
    they like. Data below highlight what happened to the 1,369 teachers whose
    tenure was extended in the 2011-2012 school year (623 had at least one
    extension previously) in the following school year.


    Source:
    http://ny.chalkbeat.org/2013/08/27/tenure-crunch-continues-but-just-41-teachers-denied-on-first-try/#.VBsN1fldUcA

    Questions remain about how multiple tenure extensions will affect the
    overall quality of the teacher pool. Do teachers who receive a second or a
    third extension leave at even greater rates than those here did after receiving
    a first? Are they continually being replaced by more effective teachers, as happened
    in this instance? While a seemingly never-ending extension policy is not a good
    idea (at some point you have to cut bait), if teachers choose to leave at
    greater rates every time they get another extension and are consistently
    replaced by more effective teachers, then the city’s overall teacher quality
    should increase – unless a law of diminishing returns is at work.
    With these questions in mind, initial data certainly suggests some real
    benefits for the quality of the teacher workforce.
    However, an earlier policy change complicates this picture, perhaps
    amplifying the positive outcomes that may be tempting to attribute only to the
    change in the tenure policy and Klein’s implementation. At the same time, New York City also stopped the practice
    of force placing teachers who had been “excessed,” allowing
    principals the right to refuse to take in a displaced teacher. Since the excess
    pool is (by reputation, at least) a dumping ground for low-performing teachers,
    their absence from the teaching pool may also contribute to the finding that
    new teachers are more effective than those they replace. But given other
    factors at play (including a hiring freeze that took effect the same year as
    the new tenure policy, in which Chancellor Klein required principals to hire teachers
    from the Absent Teacher Reserve Pool), it seems fair to say that this policy does
    not wholly explain the positive change in the applicant pool.
    Timeline
    of major teacher quality policies in New York City, 2005-2006 to 2014-2015

    It’s unlikely that the
    new union-friendly NYC schools administration will continue Klein’s tenure and
    excess policies, as neither was something the union favored. In any case, this study
    is especially timely as two lawsuits (modeled after the famous Vergara v. California case) that attack
    teacher policies such as tenure and last in, first out layoffs, have been filed
    in New York. One side or the other
    is bound to bring up this research– but oddly enough, it’s not clear which
    side it helps.

    October 16, 2014

    Disconnected? Comparing principals’ values with value-added measures
  • Teacher Evaluation
  • Disconnected? Comparing principals’ values with value-added measures

    As states work to implement new evaluation systems,
    the tenuous, if not ambiguous, relationship between value-added (VA) scores and
    principals’ observations will need to get nailed down and better understood. New
    research by Douglas Harris, William Ingle
    and Stacey Rutledge
    provides some insight, asking, “How consistent are principals’
    impressions of their teachers with their value-added data?”

    Researchers interviewed elementary and secondary principals
    in one Florida school district and
    asked them first to rate a sample of teachers on a number of different factors and
    second to give each teacher an overall score. These ratings were then compared
    with those teachers’ value-added data.

    Researchers found a positive but
    quite weak correlation between the principals’ overall rating and
    their teachers’ value-added scores. They also found that some principals perceived teachers with high VAM scores as working too often in isolation and participating too
    infrequently in school extracurricular activities. As a result, these
    principals often gave lower overall ratings to these
    teachers. Notably, principals were not aware of teachers’ VAM scores at
    the time they rated teachers.

    At least there was a strong, statistically significant
    correlation where it would most be expected, that is, when principals were only
    asked to judge teachers “teaching ability.” 

    October 16, 2014

    District Update

    District Update

    In last month’s Teacher Trendline, we discussed a group of teachers who are often ignored in teacher quality discussions: substitutes. Given the increasing awareness of the importance of teacher attendance, it is valuable to know more about the policies affecting those teachers who fill in while students’ full-time teachers are absent. Did you know, for example, that Portland, OR pays its substitutes just over $180 per day, the most of all the districts in the NCTQ Teacher Contract Database? And that about 50 percent of school districts require their substitutes to have at least a Bachelor’s degree, while a third do not require any postsecondary degree?
    Interested in looking at the data yourself? You can always browse any of these policies and more across 118 districts and two charter management organizations in the Teacher Contract Database.

    October 16, 2014

    No greater than the sum of their parts

    No greater than the sum of their parts

    If one Teach For America (TFA) corps member can boost student
    test scores at a higher rate than other teachers in the same school, would
    multiple TFA corps members in the same school result in even higher student
    scores?
    New research by Michael Hansen, Ben Backes, Victoria Brady
    and Zey Xu
    addresses this question by looking at Miami-Dade County Public Schools, where
    TFA teachers are purposefully clustered into a targeted set of disadvantaged
    schools.* This notion — that TFA’s impact on high poverty schools could really
    blossom if more corps members were clustered in a school — is one TFA has
    suggested in the past.
    This study, like those that come before it, finds that TFA corps
    members pack a lot of punch in mathematics, consistently producing nearly three
    months’ more achievement in mathematics over a single school year than their
    non-TFA peers. When it comes to reading
    scores, though, the authors continue to find what other research has found: there
    isn’t much difference.   
    So, is their largely positive impact greater than the sum of its
    parts? In a word, no. The study found no spillover effects on the performance
    of non-TFA colleagues. Student achievement in math increased only by the amount
    of each additional TFA teacher and no more. Clustering the corps members had
    the effect of concentrating these gains in placement schools, but TFA’s total
    impact in the district would have been the same had the corps members been
    dispersed evenly throughout the district.
    *For more information on
    teacher distribution in Miami-Dade
    County Public Schools
    , be sure to read NCTQ’s recent paper, Unequal
    access, unequal results
    .

    October 16, 2014

    What does rigorous clinical practice look like?
  • Clinical Practice
  • What does rigorous clinical practice look like?

    Everyone says practice matters; but
    the Match Teacher Residency provides a shining example of a rigorous, practice-permeated
    approach to training designed to ensure that new teachers will hit the ground
    running. It may serve as the uber example of Non-Traditional Teacher Prep.
    As
    part of a year-long residency, in conjunction with practice designing and
    implementing rigorous classroom instruction, residents must master fundamental
    classroom management “moves” involving scanning and making their
    expectations clear. Residents learn how to receive and respond to feedback
    before moving on to real classroom instruction.
    Here
    are some great materials, provided courtesy of Scott McCue, COO of Match Teacher Residency:

    Advance
    reading for candidates from Match’s handbook
    on classroom management.

    A video of a candidate whose first attempts at scanning
    requires explicit and targeted guidance from a coach.

    A video of the same candidate at the end of training, when
    her scanning is adequate to pass the relevant portion of the high-stakes
    assessment used to screen for preparedness for classroom instruction.
    We’d like to feature more
    examples of rigorous teacher prep in this “From the Field” column and
    we welcome submissions from teacher prep programs. Look for more discussion of
    what we propose makes teacher prep assignments rigorous in our next report in
    the “Training our future teachers” series.

    October 16, 2014

    September 2014: Substitute teachers

    September 2014: Substitute teachers

    As teachers and students settle into the new school year, we turn our attention to a group of teachers who often are overlooked: substitutes

    October 1, 2014

    A review of Elizabeth Green’s “Building A Better Teacher: How Teaching Works (and How to Teach It to Everyone)”

    A review of Elizabeth Green’s “Building A Better Teacher: How Teaching Works (and How to Teach It to Everyone)”

    Green — who did such a fine job as a blogger about NYC education issues — has written an engaging book. Unfortunately, it is in the service of a weak theory that may divert us from making the right changes in how teachers are trained.

    September 18, 2014

    Is NCTQ litigious?
  • Teacher Prep
  • Is NCTQ litigious?

    Americans increasingly agree that the gateway into teaching ought to be a whole lot tougher. Findings released this week from Gallup/ PDK’s annual education poll indicate that six in ten Americans recognize that entry standards into teacher preparation aren’t rigorous enough. Fully eight in ten think teachers should have to pass some sort of bar exam. That could be read as a public endorsement of AFT’s 2012 testing proposal, except that sensible idea’s only purpose was to serve as the guts of a fiery Weingarten speech.

    The only time you find that kind of consensus is on the subject of ice cream, or maybe bacon. The message from these latest poll numbers is crystal clear: the public thinks teacher prep needs fixing. As NCTQ has been banging this drum for a decade now (and for many of those years, as a solo act), the numbers come as very, very heartening news. It’s not good news that we have a teacher prep problem, but as we all know, the first step to fixing any problem is to acknowledge its existence. Can we agree to roll up our sleeves?

    Other less heartening news earlier this month came from Missouri, when we asked the Show Me state to, “Show us their course syllabi” under the state’s sunshine law, and the answer was an emphatic NO. To be accurate, the University of Missouri System said no and on August 26, an appellate court agreed that course syllabi are indeed exempt from the state’s sunshine laws. The oddly reasoned argument concluded that the syllabi are copyrighted and don’t have to be shown to anyone. “Huh?” we asked. Copyright or not, there’s this thing called the “fair use” provision of American copyright law which allows someone to study copyrighted materials as long as they don’t profit from them. Bad news for NCTQ, but worse news for a free press and public transparency.

    So now we’ll be heading to the Missouri Supreme Court. University of Missouri professor Mike Podgursky and long-time NCTQ booster was outraged by his own institution’s obfuscation and bravely said so in an op-ed (he may have tenure, but he does have to share the Mizzou sidewalks). That led to another Missouri ed professor labeling our decision a “bully” move. I know I’m biased, but it seems to me an utterly reasonable act. The issue of NCTQ having the right to review course syllabi has been settled in our favor in eight of nine states, including by a Minnesota appellate court. There’s nothing unique about Missouri in this case.

    In any event, I’m not in a bullying frame of mind, nor even a litigious one. The whole business (even if reasonable) is distasteful. The problem we face is not of any single institution’s making, but a systematic problem that needs to be acknowledged. We can all contribute to its solution.

    September 18, 2014

    Review of Elizabeth Green’s Building A Better Teacher: How Teaching Works (and How to Teach It to Everyone)
  • Elementary Math
  • Review of Elizabeth Green’s Building A Better Teacher: How Teaching Works (and How to Teach It to Everyone)

    Along with Tom LovelessRobert Pondiscio and David Steiner, count me among those who are less than enchanted  by Elizabeth Green’s new book. The journalist—who did such a fine job as a blogger about New York City education issues—has definitely written an engaging book. Unfortunately, it is in the service of a weak theory that may divert us from making the right changes in how teachers are trained.
    In a nutshell, Green’s argument is that two teacher educators, Deborah Lowenberg Ball and Magdalene Lampert (both very prominent in teacher ed circles), have perfected the student-centered, discussion-based instructional practices that parallel those in Japan’s math classrooms. By contrast, Green argues that while the “teacher moves” developed by Doug Lemov (very prominent in the world of charter schools) bring order to often chaotic urban classrooms, they stifle student interaction and thought. (A more charitable portrayal, at least, than by those in teacher ed who view Lemov as promoting nothing more than a “bag of tricks.”)
    Nearly two decades into their work, neither Ball nor Lampert has yet to produce any research demonstrating that teachers who employ their methods produce greater learning gains than teachers who do not, a vacuum that may have passed muster years ago, but can’t be tolerated any more. Ball has laid out an impressive research agenda into the relevant questions, but—to our knowledge—neither she nor anyone else has set about answering those questions. Nor, apparently, did Green demand that the heroines of her story show her the proof that their methods were effective, instead drawing parallels to Japan’s classrooms.
    Reviews to date of Green’s book have also noted the lack of research evidence and the problems with drawing parallels between American and Japanese schooling. But they have missed another obvious weakness, which William Schmidt’s studies about  the self-professed teaching difficulties of our elementary teachers and the middling preparation of our middle school teachers internationally make quite clear: many of our teachers have a difficult time teaching math at even a procedural level. Whatever the pedagogical value of probing, student-centered discussions of math concepts, ignoring the fact that Japanese teachers can orchestrate such discussions because they are better-versed in math ignores a critical factor in improving the preparation of U.S. teachers. What’s missing from the Green story is a simple, matter-of-fact observation: teachers can’t teach what they don’t know. Any discussion of the pedagogy of math instruction that doesn’t explicitly address the issue of content preparation is deficient on its face.

    September 18, 2014

    State
  • Teacher Evaluation
  • State

    As students settle into their first months of
    the new school year, it’s a good time to check in on the teacher policy
    landscape governing the profession across the country.  From new college- and career-ready standards to
    changes in evaluation systems, many states are making progress towards ensuring
    that all students have effective teachers. Currently,
    all but ten states require that at least some
    objective evidence of student learning is considered when evaluating teacher
    performance.  And with so many new
    teachers just beginning their careers, it’s good to see that 31 states require
    mentoring for all new teachers and 26 have strong 
    overall induction
    policies
    , unless
    of course you are a new teacher from one of the many that don’t. For more
    information on the national landscape, or to see how your state’s policies are
    doing, explore our
    State Teacher Policy
    Yearbook dashboard here
    .

    September 18, 2014

    Taking a look at charter schools operated by schools of education

    Taking a look at charter schools operated by schools of education

    A news article some months ago about a charter school operated by the School of Education at the University of California, Davis led us to ask “How many education schools operate charter schools, and how do the students in those charter schools fare?”

    September 18, 2014

    What a difference a decade makes

    What a difference a decade makes

    More teacher experience may have a few more benefits than the research has been touting (not that we really think it didn’t). A new study by Helen “Sonny” Ladd and Lucy Sorenson finds a positive relationship between a teacher’s years of experience in the classroom and students’ achievement and non-cognitive behavioral skills, into at least a teacher’s 12th year of teaching, far surpassing the 5th-year crest that most research is telling us represents the end of the climb.
    Using a sample of about 250,000 students in North Carolina (a state known for its robust data system) over five years, the researchers find that years of experience are positively related to student test scores, especially in math. The effect is not insubstantial: the positive impact on student achievement from a teacher with five years of experience is about twice as much as the disadvantage presented by a student’s race or family income. Those benefits from experience continue to grow until a teacher has about 12 years of experience. The study also found positive (albeit weaker) correlations with students’ non-cognitive and behavioral skills, including student absenteeism, disruptive classroom behaviors, time spent completing homework and time spent reading for pleasure.
    Notably, Ladd and Sorenson found that “high ability” teachers leave the profession more often than those of lower ability.
    There are a few methodological concerns to keep in mind: non-random assignment of students to teachers (which happens often when principals reward veteran teachers with higher-ability classes or parents request certain teachers) could throw off estimates. Also, because the data set only includes five years of data, even with the use of teacher fixed effects, no teacher is compared to herself across 12 or more years (for example, the data set does not show Ms. Smith’s effectiveness as both a first-year and a 15th-year teacher). To sum up, while this research finds a relationship between experience and efficacy, it cannot conclude that experience causes teaching efficacy.

    September 18, 2014

    Which teachers stick around?

    Which teachers stick around?

    New research shows that the answer may rest with the preparation program.

    September 18, 2014

    August 2014: Student and teacher school year

    August 2014: Student and teacher school year

    It’s back-to-school time for districts across the country, and there’s no doubt many families have spent some time examining this year’s calendar. In this month’s Trendline, we take a close look at student and teacher calendars for 2014-2015.

    August 25, 2014

    July 2014: Teacher Tenure

    July 2014: Teacher Tenure

    This month’s Trendline takes a close look at how districts in the NCTQ Teacher Contract Database are currently implementing key aspects of teacher tenure.

    August 1, 2014