1986-87:  Founding Members / Athletic Directors:

•    Eastern Connecticut State University / William "Bill" Holowaty
•    University of Massachusetts / Charlie Titus
•    Southeastern Massachusetts University (now UMass Dartmouth) / Harry "Mickey" Connolly
•    Plymouth State College (now Plymouth State University) / John P. Clark & Eugene "Gene" Fahey
•    Rhode Island College / William "Bill" Baird
•    University of Southern Maine / Richard "Dick" Costello 

1993-94:  Western Connecticut State University / Edward "Ed" Farrington, joins as primary member.

1997-98:  Keene State College / John Ratliff, joins as primary members.

2000-01:  Field Hockey affiliate members, Bridgewater State, Fitchburg State, Framingham State, Westfield State and Worcester State join. Men's Lacrosse affiliate member, Salem State, joins.

2003-04:  Men's Tennis affiliate member, Salem State, joins.

2004-05:  Men's & Women's Tennis affiliate member, Bridgewater State, joins. Women's Tennis affiliate member, Salem State, joins.

2009-10:  Women's Tennis affiliate member, Worcester State, joins.  Women's Swimming & Diving affiliate members, Bridgewater State and Westfield State, join.

2014-15:  Women's Swimming & Diving affiliate member, Bridgewater State, departs.

2018-19: Castleton University / Deanna Tyson, joins as primary members.

2019-20: Men's Lacrosse affiliate member, Massachusetts Maritime Academy, joins.