Given the general direction of federal and state policy over the past few years, one could easily think most large districts include, or have set plans to include, some measure of student growth in teacher evaluations. But, as our latest Teacher Trendline shows, 28 percent of districts in NCTQ's Teacher Contract Database still do not include such measures.

When it comes to evaluation frequency, the majority of districts in our database do evaluate all their teachers annually, both tenured and non-tenured. Nearly 77 percent of districts evaluate non-tenured teachers once a year. Clark County (NV) stands out, formally evaluating non-tenured teachers three times a year. Far fewer districts (54 percent) evaluate tenured teachers annually. Nearly a quarter only do so once every three years. Worse, in five California districts—Fresno, Long Beach, Los Angeles, Sacramento and San Diego, teachers are only evaluated only once every five years after they've taught ten years.

Read more about teacher evaluation trends across the districts in our Teacher Contract database, here.