Autism - 1:1 Support in School

Hi

With the opportunity of coming to live in Spain, we need as much information as possible with regards to schools, specifically regarding schools who will accept those with a diagnosis of Autism.  Our 10 year old son is in a mainstream school in England with full time 1:1 support.  His support is not due to inappropriate behaviour, it is mainly to stay on task and due to his language barrier.  I have heard conflicting stories on what support is available in this area.  His current statement is really good having ABA (Applied Behaviour Analysis), SaLT and OT written into it - after a long hard fight.  Left in a class with 20-30 other students without 1:1 support, is not an option for him at the moment.  Any kind of advice or direction from anybody would be greatly appreciated.  Thanking you in anticipation and hope.