Janna, that's perceptive to think maybe your home might be triggering issues. difficult child loves living at his Mom's because there is always something going on (in addition to the television, lol) while my house is boring! He doesn't realize that my house is boring because I restructured it for his benefit. Just like a school 
we eat within 30 minutes each night. We do not keep the TV on for no reason nor do we have CD's blasting or radios competing for sound waves. All those things are here and exist but a decided effort was made to eliminate stimuli that was not needed or in use. Homework time was always set too so there was no decision making about when to do it. Bath time and bed time were always fairly closely scheduled too. In other words...LOL...much like a school, he never had to worry much about what was going to happen or what was expected.
For difficult child that led to complaints about being bored but a GPA of over 3.0 and a sense of pride. The one thing I could not improve was his social skills outside the family. He actually decided to just not talk much so peers wouldn't think he was a weirdo. That pains me still that I just could not find a way to help him "fit in". The psychiatrist encouraged me to be proud of the progress I was able to trigger and I am. on the other hand as a social being, I hate that nobody else reaches out except older adults. DDD
PS: One activity that I explored with some success was a little theater group for teens (that was closely supervised by adults). Playacting was helpful for him and made it possible for him to "pretend" to fit in. The group only lasted for two summers but it was helpful.
