Given that the process is different for international students it would be a waste of OPs and the international student organization's time. OP can contact the school board for more information about registering for school and services for children with autism as a child who has access to public education through the WP of the mother.
Surely, you didn't realised this is a division of the school board. And it will be very easy to navigate back to the school board's main webpage.
Check it out!!!