There are quite a few school districts that have good accommodation for children with special needs - I myself moved to the Wilson School district for that very reason. However, here in Berks County, we have the Berks County Intermediate Unit (BCIU - here's a link to their site: http://www.berksiu.org/Pages/AboutBCIU.aspx
) which comes to the school itself if a child needs a lot of help.
Also, there are some great resources here in the area for children with special needs, including a wonderful practice called the Center for Pediatric Therapy, which has some great programs for children under the Autism Spectrum/Sensory Processing, etc.
If you'd like more information on Berks County school districts, please don't hesitate to contact me (my cell phone is 610-207-0172) or e-mail me and I will do my best to get you the information you need.
Good luck with your relocation.