Beside being a school teacher, I have an autistic kid in my class, I have an autistic son who does not have behaviour issue but learning delay. I can imagine how draining it must have been and it is true that most people will not understand what you are going through with the daily endless cycle of stress and the need to cope with different behaviours. There is nothing but to pray to God and believe for gradual improvement as your son learn the routine he needs. Perseverance is greatly needed and I believe God has a plan for my son as well as yours.