The city was suppose to lower class sizes in New York City schools, but the recent 2011-2012 preliminary class size report shows class sizes has increased for the fourth year. In the fall of 2007, the Department of Education proposed a plan to reduce class size for K through third grade to no more than 20 students per class, 23 students per class in fourth through eighth grade, and 25 for core high school classes. However, the report shows that the average citywide class size for fourth through eighth grade was 26.6 students, and a significant number of kindergarten classes had more than 25 students.

In 2003, a court found students were denied their constitutional rights to adequate education because of oversized classes. Since then, the city vowed to lower class sizes in the Campaign for Fiscal Equity Lawsuit settlement in 2007.