The storied Boston Latin School has long been recognized as one of the very best public schools in the state dropped a notch in its state ranking because 13 students opted out.

http://www.bostonherald.com/news/local_politics/2016/09/mayor_boston_latin_loses_level_1_status_due_to_parcc_opt_outs_video

The problem is not the school or its students, but an absurd, misleading, pointless ranking system. Just like A-F grades for schools. Only the sheep create and believe such grades.