Information about class sizes within Arlington is reported annually. All data reported in each year’s report reflects the official September 30 enrollment.

• Class Size Report 2020-21
• Class Size Report 2019-20
• Class Size Report 2018-19
• Class Size Report 2017-18
• Class Size Report 2016-17
• Class Size Report 2015-16
• Class Size Report 2014-15, Revised 2014-15 Class Size Traffic Light Report
• Class Size Report 2013-14
• Class Size Report 2012-13