Residential Treatment Center (RTC) is residential treatment center. There are different variations on that name and there are different kinds of placements, diagnostic placements, short term, long term, etc. There are Intensive Outpatient programs too that vary in type and form....some are after school a few days a week for a few hours, all the way up to some that are almost exactly like inpatient treatment centers but they go home at night, school is temporarily transferred to that site and is provided at both kinds of placements.
Our psychiatrist owns an outpatient program the kids are in daily from 8-4 with medication management, therapy groups, individual therapy, school, Occupational Therapist (OT) and rec. therapy etc. With your son's language skills he could really benefit from something like that. They take only kids thru teens in this practice. I know different areas have different resources but it is worth calling around.....
If husband did not have to do a lot of the work he might go along with it....he would look pretty bad not being willing to explore if there were better ways to help him. If how you worded it (not fair you should need to) was about how worried you are for him and wanting to make sure his medications were appropriate since you h ave heard t hat it can cause aggression etc. I dont know, just throwing out ideas (hard not to want things to be better for you when I KNOW that feeling of being trapped, stuck, bullied...and then adding that you have a young child to care for. And being who we are here, we all LOVE our kids, I dont see your difficult child as a villain but a child in real need so please dont think I am trying to say he is awful and you should get rid of him, just only saying I care and hope there is some kind of answer for you.)