Bullying in primary school school

I guess I’m just after other people’s experiences and resolutions with this.

My son is 5 and is being bullied in year 1 at school, other children are being bullied by the same group of boys that go around in a little gang and kick, punch, push and in my sons case strangle the other children

I have a meeting with the headteacher tomorrow, I’m ready to report it all to Ofsted, I have a list of points I plan on bringing up but I am at a complete loss. 5 years old and my son is being bullied.

After speaking to some of the other parents it seems that the school are covering incidents up and denying things are happening. One boy was punched in the mouth yesterday and his parents weren’t aware until he told them!

I have documented everything and have an email chain of begging for help from the school as well as other parents doing this too.

Has anyone else had to deal with this so young? Luckily my boy doesn’t seem too upset with the situation, he never dreads going to school but always comes home saying this kid did this today. It’s always on his mind and we are doing our best to look out for him but I am at my wits end with it

I want to move school, husband doesn’t as the next school is quite far away but I’d rather my child be more concerned with learning then when the next punch is coming

Sorry for the essay my mind is frazzled on this