As I head back to the classroom, I think about the last school year. In the second-to-last week of school, my fifth-grade classroom was 90 degrees, with no air conditioning. My students were sitting together, helping each other, laughing, struggling and having fun. At the beginning of the year, they were unsure of each other. They smiled politely but kept to themselves or the friends they knew and never asked for help. So what had changed?
