what teams were present at the great lakes invitational?
michigan, michigan state, michigan tech, western michigan, north dakota, toronto, new hampshire, colorado college, wisconsin, boston college, notre dame, boston university, harvard, maine, ohio state, rensselaer polytechnic institute, lake superior state, northern michigan, colgate, dartmouth, providence, brown, cornell, princeton, st lawrence, yale, bowling green, pennsylvania, western ontario
what is the highest number of titles earned at the great lakes invitational?
15
who was the team that earned the highest number of titles?
michigan