My ASD child Says " It's OK Mum, it doesn't bother me. "

What Do I do For The Best here ? 


As the Title says," It's OK mum, It doesn't bother me." This is what my son is now saying after years of relentless bullying..many many different example . He is now in his Final year of Primary school, and the School has done very little to nothing effective to stop the children from being nasty to my son. to make matters worse, I hear about various incidents from other parents... The mums and Dads of children who feel guilty about taking part in the mob mentality of well No one likes him... or Everyone does it....or if I don't join in I might be the next victim kid...Sometimes these *would be nice kids*, well they have to tell... the parent are shocked, call me, PM me or talk to me at school/ kids club etc.. Usually they start with the sentence.. Am very sorry but......
I am heartbroken I can't stop this.... am angry the school don't even call me 90% of the time they know of things.. Most recent example..... graffiti in the toilets... **** is Gay....... The children involved got spoken to.... Was i Called by School??? NO !!
Was the Parents Called by School ??? NO !!!
this was just the final straw for one of the nice kids, who told his mum.... and told her how my son wasn't at school today... maybe because all his friends keep taking his hat and gloves from him, passing them to each other so he cant get them, then throwing them onto the ground..... or maybe its because his good/ best friends have been calling him names...or maybe its because everyone shuns him as they don't want to be associated with the kid who doesn't bother about being bullied anymore because at least he has friends who do play with him when they are not being nasty to him........ So I ask you all..... Where do you go with this ?  For reasons of his own.. He just CAN'T speak up for himself.. and our school ??? What school wants to be known as the school with bullying issues ?? they hind, deny or turn a blind eye to keep it all hush hush and off their records..
my apologies for pouring out on here, but when your child is so defeated he says "it's OK Mum, it doesn't bother me" that hurts your heart ..... oh and No... He won't hear of changing schools, he likes his so called good school and friends, no matter how much i say to him.. My Big BIG fear would be if I did move him School, Would it happen there and would he have Zero friends? ? Would be be unhappy?? Hate me for moving him... He doesn't like change.... He is generally happy enough, given his social awareness skills are so poor, he seems to be a tough wee cookie. resilient beyond anything I or anyone i know could ever put up with...   He shouldn't have too... I wish these school children weren't so cruel.  
So here I am... What do i do?