Hi P., I sort of have the same situation on my hands as well. My son is the same age. He will be 5 in April also. Well he has a speech impairment also and is bigger than other kids his age and has a more agressive behavior than others also. I put him in daycare when he was 1 1/2 yrs old and from the time he began to speak I knew he was not talking the way he should be. The daycare providers kept saying not to worry that he would correct himself but he never did. I switched him into headstart where he is in a more structured learning environment 5 days a week just like school. He has improved in so many areas. Now there were questionaires that the school sent home and saw that he had a speech problem and they helped me find help for him. They did everything as far as find a company that was covered by his insurance, set up the speech evaluation, and followed through to make sure that his therapy began as soon as possible. He had a speech evaluation and a behavioral evaluation as well. The behavioral therapist told me that his agressive behavior was due to his speech problem. That most children that have a speech problem tend to be more agressive and have a bigger behavior problem because they are filled with frustration because they are unable to express themselves clearly. It only frustrates them more when they have to repeat themselves. Now he has been seeing a speech therapist and an occupational therapist since May of this year. The ot and speech both tie in with the speech problem and all come together to help improve the child in all aspects. Since he has been having therapy he has improved soooo much! His speech is so much more clearer and he has a better understanding of a lot of things that he didn't before. Now before he couldn't say the abc's and repeat it w/out you repeating it w/him. NOW he can do it all by himself. Now mind you he still has a problem with certain letters of the alphabet like L,SH, CH, T, TH, and S is really hard for him along with R, but his therapist has hand signs and things that reminds him how to stress the letter and know where the sound of the letter comes from. She is truly wonderful with him. We still have a lot of behavior problems with him but I don't see that going away until he is fully complete with his therapy(and he is only 4, lol). Needless to say my baby is improving dramatically and has no learning disability. As a matter of fact he is pretty bored in hs now and needs to be challenged a little more but the hs has a lesson plan and cannot exceed it.
Sorry so long.... but we are now preparing him to be tested to enter the vanguard program in HISD. My oldest is in it and with the improvement he has made and how the teachers say he just bored I believe his capable and ready for vanguard. I think he will love the idea if being in kinder with other classes to go to and other children to meet. If you met him you wouldn't notice any problems with him other than his speech either. I think public school is the best thing for him. But I understand where you are coming from. Just keep an open mind and stay positive. He feeds off of you. My son loves it when I slow him down so that I or others understand what he is saying and then he understands himself. Praise him for the effort he puts into speaking and don't think of it like it's a disability. He's ready for school whether you choose private or public. Good luck!