Hiya i’m here again

Forgot to ask in my last post but how are schools on innoculations? Only there was a lot of talk on MMR jab maybe being the cause of Autism when my son was born. So i decided on, not letting him have the jab, so with saying that will a schhool in Spain still enrol him without him having his MMR? He’s had all other jabs plus do i have to bring proof of him having them
Hopefully this time someone can help me i’ve looked high and low on the net but can’t find what i want
Thanks Scooby x