A successful lesson starts with a good lesson plan, but the current state of our education systems means that teachers and professors have less time than ever before to create and more importantly edit their lesson plans. To improve teaching, teachers need more than a reduced lesson-planning burden. Teachers need time and techniques to examine what worked and didn’t work when they edited those lessons. One interesting technique is called lesson study, which allows teachers to pool observations and collective wisdom to collaboratively edit the design of a lesson, test it with a new group of students, and make more observations to see if it works better. Read on to learn more about the importance of collaboration inside and outside of the classroom, courtesy of Chalkbeat.