The evidence that, in general, professional collaboration benefts students and teachers alike has become almost irrefutable. Professional collaboration boosts student achievement, increases teacher retention, and enhances the implementation of innovation and change. The big questions are no longer about whether teachers should collaborate. No profession can serve people effectively if its members do not share and exchange knowledge about their expertise or about the clients, patients, or students they have in common. The big questions, rather, are about how and how well teachers and other educators collaborate. Not all kinds of collaboration are desirable or effective, and not all are appropriate for the people who practice it or for the task at hand.

https://www.wise-qatar.org/2017-wise-research-collaborative-professionalism