Disruption in swimming lessons

[OneHornedFlyingPurplePeopleEater]

I'll start this by saying I kind of know I'm unreasonable, hence why I've not complained. It's more that I can't help feeling fed up at the situation and don't know what the resolution should be.

My kids have swimming lessons on a weekend morning, youngest is 3 and in the first stage class with 6-8 kids and teacher in the pool. 3-5 age range.

Recently a new kid has started. He has additional needs, but I'm obvs unsure of the details as I don't know the parents. He's hugely disruptive to the class, wandering off, refusing to do the lesson as asked, splashing everyone, having to be retrieved etc. Usually kids that are misbehaving get sat on the side and spoken to then continue with the lesson when they're ready. This hasn't and won't work in this scenario.

Ordinarily I'd sat this is none of my business. But my child basically isn't getting swimming lessons due to the disruption. It's a 5m area and they're being led/swim across with float approx 3-4 times each, while the teacher isn't actually looking at them and frequently has to stop mid length to intervene. Completely different to how lessons were before.

They're learning nothing. And while I appreciate it is not the fault of the child or parents, it's not mine/my child's fault either and I'm paying for lessons which are totally ineffective - but used to to quite good.

The parent was largely ignoring the lesson, like not even glancing up from the phone to witness the disruption or the teachers request to help. It was frustrating, although prob understandable if this was potentially half hour out of their week they could take their eyes off. Parent has been spoken to by the swim school and now interacts more, but it doesn't help with the disruption.

Short of pulling my child out of lessons, which I'm not really prepared to do, I don't know what the answer is.
Should the swim school be doing anything differently? Should the parent?

I guess my AIBU is about to whether I'm being unreasonable to be fed up and want something to change?

Ask to change to another time and tell them why

If the lessons are 3-5 years old then I think that there was always the potential for lessons to go that way, rather than it being a SN issue. If your child is really getting nothing out of the lessons then have a chat with the instructor, but I'd be surprised if that was the case.

You need to explain this to the centre running the lessons. As you say, you can’t keep paying for lessons if your child isn’t learning.

I would definitely be speaking to the swim school about this situation, group lessons don’t sound suitable for the SEND child, but that’s not your issue. I would raise it more on a safety aspect, if the teacher is regularly not watching the group because they are off retrieving another child then it’s unsafe for your child. I would ask them to review teacher levels for the group or ask to move to another group of that level.

raise your concerns to smiw school. They may need an additional instructor