LRE: MAINSTREAMING 1ST GRADER WITH MILD AUTISM Posted on 10/29/2018 by Community — 7 Comments ↓ Hadda: I have a first grader with an ED. he gets mainstreamed only one hour. How many hours they suppose to give him by law? he is very good in general education so I want to ask for more hours for him !! I have an IEP coming up.