I do implement Collaborative learning (CL) and obtained good academic gains. But I haven't investigated other variables that could be positively affected by CL. Have you investigated academic gains and other possible positive effects of CL?
https://www.researchgate.net/publication/260133594_Facilitating_Cooperative_Learning_Among_Matriculation_Biology_Students?ev=prf_pub
Article Facilitating Cooperative Learning Among Matriculation Biology Students