Andover Public Schools has published the 2015/16 school calendar, approved by both the School Committee and the AEA.
The first day of school for students will be Wednesday, September 2, 2015, which is the Wednesday before Labor Day. With zero snow days, school would let out on Friday, June 17, 2016. The same religious holidays (Rosh Hashanah, Yom Kippur, Good Friday) and week-long vacation schedule (February & April) have been maintained for 2015/16 as in years past.
You can find the full 2015/16 school calendar on the APS website.