Backpack strap cut with scissors

The school is not dealing with this bully. Complain to the LA and Governors re bullying. Or change schools

I read this as the OP being in Ireland and making a point that minority children (immigrants ie non-Irish) are being systematically bullied.

I’m surprised very little has been made of your constant references to the issue being the ‘Irish’ staff and children. Change this for another group and it would not be acceptable. You appear to be hinting that the staff and pupils are victimising anyone who isn’t Irish which is frankly unbelievable.
Scissors will be available in every primary classroom. They won’t be removed in this situation.

Where are you based? You seem to be coming across as blaming a specific group of people (Irish).
You say the school is good but why is there no teacher and constant supply?
I think I would be trying to move my child.

No they do not have to show the complaint and resolution to Ofsted.

Op - follow the school complaints procedure, which is on their website. Be clear about what outcome you want though. I guess some assurances on how similar situations will be prevented in the future? Children shouldn't be carrying sharps around in school.
If you go to the Chair of Governors expect them to tell you they can't get involved at this stage and for them to advise you to follow the complaints procedure. Honestly, it would be wrong for a COG to randomly meet with parents who want to chat about complaints with them. They have to remain uninvolved and impartial and follow the published procedure.

Is there any sort of CCTV recording of that room where the bags are left? A child has been loose with a (I suspect) sharp pair of scissors, no adult around and has damaged property. Not only upsetting for your DS having his stuff targeted but that’s quite frightening a child can do that freely with no form of repercussions?

Can you look for another school for your son?

The problem is how do they find out, short of seeing the culprit, someone admitted or telling on the culprit. I'd there CCTV?

What the school should be trying to do is promote an anti bullying policy.

Are you in Ireland?

Nope she doesn't know she just suspects it was the child her son had problems with last year, however as there's no evidence that it was the child that she suspects only her assumption that it was him as noone saw what happened to the bag, and thinks that this 7 year old is going to stab her child because he's been allowed to get away with it as he's Irish and so are 90% of the school students and staff. Which is a rather racist assumption from the op

i would do this

You need to put complaint in writing. I also suggest you request a copy of the schools anti bullying policy and official complaints policy. Your poor dc having this done to him in year 3.

. Some schools are crap with bullies. I had this with my son.

Ultimately, if you feel the school is not supportive (and the trust has broken down between parent and school), then the best thing for your child might be to leave the school. Give yourself a timeline. Prepare by looking for an another school.

To be honest once you lose faith in a school's ability to deal with systematic bullying you would do better to find a different school. I understand that there might be reasons why you like the school (possibly it it Catholic given that you have noticed the number of Irish children). I would though find a different school even if it doesn't fit your religious preferences. Put his name down for any which you think you could reasonably commute to. We had to do that with one of ours because although eventually they made some of the right noises when we involved the governors there was too little action to safeguard our children. They were much happier in a different school.

I wouldn’t expect the scissors to be taken away from Year 3 because of one incident of a backpack strap being cut, no. It’s perfectly normal to have scissors available in the stationery caddies on their desks, they likely cut and stick things fair often. It’s very melodramatic to leap from a backpack strap being cut to “someone could be stabbed!”.

It sounds like they have spoken to the class (as they say they investigated and no one is coming forward to admit it), so I don’t know what else you want. I’m sure at the time, they stressed to the children that damaging other people’s property is unacceptable, although at 7 they all knew that anyway and if this is bullying then the bully also knew that.

On your situation, I’d be keeping a detailed diary of bullying incidents that are happening to support an investigation down the line when you have a name. But with no suspect and no evidence, the school won’t be able to do anything about this specific incident. Even the police wouldn’t be able to solve a crime without evidence or a name.

I’d be questioning why a class of that age have unlimited access to scissors sharp enough to cut through that strap, because average paper / arts and crafts scissors you might use in a classroom wouldn’t easily get through it. Unless of course the child is bringing a blade of some sort into school with him which is a whole other concern!

OP, an afterthought to add to my previous comments. Request a meeting with the Chair of Governors.

so you do know who did it? Tell the school
the name.

I would keep calm and I would do this. I would write it like a report- very factually and unemotional.
I think there will be information about how to complain about a school on the council website
good luck, I’m sorry this is happening to your child.