london visit from texas

Not sure if this is the right form.  I currently live in Tx.  I have a 12 year old non verbal autistic child.  I am planning on visiting the UK at the end of may.  There is no way I could bring my son with me.  I would like to visit a school that has a class for kids on the autism spectrum.  I did contact a few, but they were for kids with high functioning autism.  How would I go about finding one?  Do public schools have special needs classrooms?  It will be really interesting to see how the educational system differs from the us.