What’s the best way to put students into groups? It’s the first task that confronts teachers who want students to work together. And the best reply is one of those “it depends” answers. Here are the questions on which it depends. Should teachers let students form the groups? Students often prefer this approach. They tend to pick people they know, classmates who are friends, those in the same major, and those who share the same race. It’s more comfortable working with people who are known and similar. When groups are composed of friends, they sometimes struggle with the transition to a more professional relationship. They’re used to socializing, but now there are tasks to complete and that means functioning in different roles. If the group work is a project that requires extended collaboration and will benefit from a variety of opinions and perspectives, letting students form the groups may not be the best approach. On the other hand, for short, ad-hoc group work and for students who may be shy and not used to working with peers, knowing others in the group makes the experience less intimidating.