Of course I'll pray for you, your child and your family.
People can be so cruel.....and I have to wonder what kind of family life those bullies must have if they're so mean at such a young age.
I hope you can find a home in the school district you want to be in. I'm in the USA but we have an online school for students K-12 and it's complete with state licensed teachers. And it's at no charge. If that fits your schedule that might be an alternative if things at the secondary school don't work out.
I'll keep you all in my thoughts and prayers.