We went through the same thing with DS8. He was bordering on depression with a healthy dose of anxiety thrown in. He'd been asking for homeschooling for a couple years and I was really looking into it. I realized after seeing what 2giftedgirls went through with her precious Butter that things wouldn't get better. (they were classmates). DH was concerned that DS and I would butt heads over homeschooling and honestly so was I. We found a wonderful private school for him and while it's a stretch for us financially we are determined to make it work. He's only been there for a week (then a week off for holiday) but I already see a difference. He doesn't beg to stay home.
I wish you much luck & clarity of vision as you start a journey of what's next.
