Massachusetts Interscholastic Athletic Association

[2] Rugby became the MIAA's 35th sport in 2016, following a 2015 MIAC vote that passed by a wide majority.

[7] Boys' Swimming & Diving has been an MIAA sport since 1947, competing in the winter season.

The MIAA Boys' Swimming & Diving State Champions are listed below.

Girls' swimming & diving then expanded to become both a fall and winter season sport beginning in 1991.

The MIAA Girls' Swimming & Diving State Champions are listed below.