▁Chicago , ▁Harvard ▁College ▁at ▁Harvard , ▁or ▁Columbia ▁College ▁at ▁Columbia ) ▁while ▁at ▁others , ▁such ▁as ▁the ▁University ▁of ▁California , ▁Ber keley , ▁each ▁of ▁the ▁fac ult ies ▁may ▁be ▁called ▁a ▁" col lege " ▁( the ▁" col lege ▁of ▁engineering ", ▁the ▁" col lege ▁of ▁n urs ing ", ▁and ▁so ▁forth ). ▁There ▁exist ▁other ▁variants ▁for ▁historical ▁reasons ; ▁for ▁example , ▁Duke ▁University , ▁which ▁was ▁called ▁Tr inity ▁College ▁until ▁the ▁ 1 9 2 0 s , ▁still ▁calls ▁its ▁main ▁under grad uate ▁sub div ision ▁Tr inity ▁College ▁of ▁Arts ▁and ▁Sciences . ▁ ▁Res ident ial ▁colleg es ▁ ▁Some ▁American ▁univers ities , ▁such ▁as ▁Pr inc eton , ▁R ice , ▁and ▁Y ale ▁have ▁established ▁resident ial ▁colleg es ▁( s ometimes , ▁as ▁at ▁Harvard , ▁the ▁first ▁to ▁establish ▁such ▁a ▁system ▁in ▁the ▁ 1 9 3 0 s , ▁known ▁as ▁houses ) ▁along ▁the ▁lines ▁of ▁Oxford ▁or ▁Cambridge . ▁Un like ▁the ▁Ox bridge ▁colleg es , ▁but ▁similarly ▁to ▁Dur ham , ▁these ▁resident ial ▁colleg es ▁are ▁not ▁autonom ous ▁legal ▁entities ▁nor ▁are ▁they ▁typically ▁much ▁involved ▁in ▁education ▁itself , ▁being ▁primarily ▁concerned ▁with ▁room , ▁board , ▁and ▁social ▁life . ▁At ▁the ▁University ▁of ▁Michigan , ▁University ▁of ▁California , ▁San ▁Diego ▁and ▁the ▁University ▁of ▁California , ▁Santa ▁Cruz , ▁however , ▁each ▁of ▁the ▁resident ial ▁colleg es ▁does