I have no good suggestion but would like to offer an alternative view. When DS9 joined the grade 5 class earlier this year, he has no problem fitting in. However, an incident made the teachers and principle realised that an 8 yr old's social lanaguage is very different from a 10/11 yrs old. That was one reason why they didn't allow him to join the Middle school math Count group with the older kids after school hrs. They were concerned abt the topics and langauage the older kids use in the social setting, which they have no control.