High Quality Content by WIKIPEDIA articles! The South Shore League is an athletics conference that is part of the Massachusetts Interscholastic Athletic Association (MIAA). The League consists of 9 schools, ranging from as far north as Hull, Massachusetts, to as far south as Harwich, Massachusetts. The South Shore League participates in Division 3 & 4 competition in the state of Massachusetts. There are 18 sports affiliated with the South Shore League.