A meta-analysis comparing small-group work to individual work in K-12 and college classrooms found that students working in small groups achieved significantly more than students working individually, and optimal groups for learning tended to be three- to four-member teams with lower-ability students working best in mixed groups and medium-ability students doing best in homogeneous groups. Learn at Extramarks EduCafe to score better in exams. Download the Extramarks app now.