A study looking at the attendance of over 234,000 teachers in the 2012-2013 school year found disturbing evidence of a group of teachers who are absent at least one out of every ten school days. The report, Roll Call: The importance of teacher attendance, finds that at 16 percent, the group of chronically absent teachers was precisely equivalent in size to the group of teachers who had excellent attendance in that school year, absent three or fewer days.