GroupAssignment must have a grouping
GroupAssignment must have a grouping

RyanTech/classroom,sicipio/classroom,guoyu07/classroom,tjhorner/classroom,jasnow/classroom,jingruoruchu/classroom,uqbar-project/classroom,chengjunjian/classroom,AlvarezAriel/classroom,mkcode/classroom,adoosii/classroom,mkcode/classroom,adoosii/classroom,bhanuc/classroom,tjhorner/classroom,BelieveC/classroom,alejandrogarciasalas/classroom,BelieveC/classroom,hackerkid/classroom,ConnorCartwright/classroom,nfeliciano/classroom,nfeliciano/classroom,sicipio/classroom,alejandrogarciasalas/classroom,chengjunjian/classroom,jasnow/classroom,uqbar-project/classroom,hackerkid/classroom,RyanTech/classroom,chenwenbin928/classroom,hackerkid/classroom,uqbar-project/classroom,alejandrogarciasalas/classroom,chenwenbin928/classroom,chenwenbin928/classroom,ConnorCartwright/classroom,adoosii/classroom,bhanuc/classroom,AlvarezAriel/classroom,AlvarezAriel/classroom,mostlybadfly/classroom,tjhorner/classroom,RyanTech/classroom,BelieveC/classroom,BelieveC/classroom,guoyu07/classroom,guoyu07/classroom,mostlybadfly/classroom,mkcode/classroom,chengjunjian/classroom,jingruoruchu/classroom,nfeliciano/classroom,bhanuc/classroom,sicipio/classroom,jasnow/classroom,jingruoruchu/classroom,mostlybadfly/classroom,ConnorCartwright/classroom