Re: who can sponsor my autistic son's theraphy and schooling?
As Mira11 stated, in the United States, schools are required to help your child and provide any services necessary for success.
I do not know if this is the case in your region. Perhaps the medical doctors that diagnosed your son can point you in the right direction.
If you have any social services, health departments, or service departments for women & children, perhaps you can seek information there.
God Bless! I hope you find what your son needs & deserves.