While many kids do find activities that can occupy them for more than 10 minutes, I think a puzzle is usually not on the list for that age group. It sounds to me like the teacher was being dismissive. Is the teacher really aware of your son's abilities?
Last year we were blessed to have preschool teachers who acknowledged my daughter and went so far as to pull me aside to tell me how off the charts she was. I didn't really believe them at the time and then we had her tested and it all made sense. I can't believe all preschool teachers are not like that. Now I'm a little scared of the upcoming school year with new teachers!
