You need to look at the homeschooling options in your state. You aren't posting a signature or even a state so it's hard to know how to advise you on this. Check your state's department of education website or google for a homeschooling association in your state.
We HSed for 2 years in California and did it through a public charter school for homeschoolers. Both my kids had active IEP's at that time.
If you are looking at HSing because your child is being violent in the school setting I personally would counsel you against bringing him home under most conditions, particularly if he is bigger and stronger than you are. Puts you both at risk.
Is anything clearer about his diagnosis? Have medication changes been made that have worked? You haven't posted in 6 months so I'm just wondering what the situation is now.