Cee,
Our state does algebra readiness testing and the beginning and end of the year to ensure progress. Does yours? She rocked that test and we used the score to advocate for acceleration in math from 7th grade math into Algebra I. We were initially worried about gaps since she was missing the 2nd half of 7th grade and all of 8th grade math this way. She hasn't missed a beat. She is doing very well in Algebra and her Algebra teacher told me last week that moving her up was absolutely the right decision. She's 12 and with high schoolers for math only. She hasn't had any issues from being in with older kids.
I doubt that your son would miss much by skipping ahead. If it's only one class, I think he will be OK. Girls that age are giggly. He'll probably think they're weird
What is the structure of his school? Is it K-6 or is there a middle that he's already in?
My son in 6th grade just started the Middle School, which is grades 6-8. He is my only child, not often around older kids, except when he sees them in the halls. Once a week, he is in an advanced violin ensemble through the private violin school, with MS/HS kids but they are smart, musical, well behaved.
7th grade regular math, well, I suppose I am worried. Maybe I shouldn't be? The guidance counselor is totally leaving the decision to me. However, it was an idea that came up in a meeting with herself, my son's current math teacher, and the principal. So they are all on board with the idea, it's just up to me to say yes.
Can any parents here reassure me that socially, he would be fine in a 7th grade ordinary math class in a not-so-outstanding school district?