RetM, the percentage of goaltender minutes played last season for returning goalies divided by those of all goalies, is about the best indicator you�re going to see for experience in net. Note that virtually every team in the ECAC returns its principal netminders:
Team Ret All RetG Dartmouth 1762 1762 1.000 Harvard 1995 1995 1.000 RPI 2118 2118 1.000 St. Lawrence 1817 1817 1.000 Yale 2114 2114 1.000 Vermont 1811 2051 .883 Brown 1174 1871 .627 Union 715 1927 .371 Colgate 600 2135 .281 Cornell 320 2003 .160 Princeton 174 2223 .078 Clarkson 0 2070 .000