DS9 is two years ahead in a mixed-aged classroom, so most of his friends are 10-12 years old. He's tall, so he doesn't stand out as much as he might otherwise, but there's a big physical difference between a 9-year-old and a 12-year-old regardless. Fortunately, DS is mature enough and quick enough that most kids quickly forget his age and accept him as-is. Personally, I felt weird enough about inviting 12 year old kids to DS's 9th birthday party that I left the age off of the invitation and the cake, but every one of the older kids came, and they clearly enjoyed DS's company. So, it's working for us so far.
