Autism is like moving to a country with strange customs and a language you do not understand. You must learn the language over time but until you reach a certain point you will always be known as a 'foreigner'. Some will be 'racist' towards you some will not tolerate your customs. and some will be there to help you learn the language and customs of 'normality'.
I had help learning the language but the customs and laws I had to learn on my own. People were at times not so tolerent of my behaviour. I felt as if I was not allowed to be the way I was. So I looked at how others behaved and I learnt from that.
Even though it is a hard lesson to learn as such, If you can send your children to a mainstream school. They might struggle and it will be hard but they will grow stronger in the end.