Crying baby at kids class

[LittleGlamping]

Really not sure if I'm unreasonable here so happy to accept if I'm in the wrong. My kids go to an evening martial arts class. The teacher who runs it has brought his wife along as long as I've known but now they have a baby and they're now bringing the baby too. The baby cries, as babies do, and the teacher has to shout over the sound. I just think it's very distracting and why can't she just step outside with the baby when it's crying if she still wants to come along. AIBU to think this is unprofessional? Honestly, I just want to watch the class without a headache, so maybe I'm just moody.

That's ridiculous, I don't bring my partner and baby to my job, why should he!?

YANBU but since it's the teacher I've no idea how you'd do anything about it!

Do you know any of the other parents their? If so could you talk to them about it and if they all feel similar you could approach the teacher in a group setting to raise your concerns.

None of the parents really speak to each other. Everyone just seems to quietly watch the class, apart from a couple of parents who seem very happy about the baby being there despite the crying.

Have you spoken to the instructor about this? As that would be a start.
It would pee me off if a parent didn't take their baby outside of the class if said baby was crying, regardless of whether they were the instructor's offspring or another paying parent.

What about any of the kids/students in the class? Is it obvious that the crying baby is distracting and disrupting them from the class? If so, surely the kids will be telling their parents?

That’s ridiculous. I’d expect a parent of a child participating to take a crying baby out, much less the instructor’s partner who presumably has no reason or need to watch. I have no problem with babies in restaurants, at nativity plays, at funerals, at weddings, at karate class or whatever - but I do expect the parent to take them out if they are causing a distraction.

It's irrelevant if it bothers you, as it's not your class!

And I doubt very much that the baby is crying that much.

Except it is directly relevant since she’s paying the instructor to deliver a professional teaching session. Allowing a baby to cry so loudly the instructor has to shout over it is rubbish. The baby clearly isn’t having any fun either - martial arts classes are noisy and shouty and a terrible environment for one. God I hate this. What on earth makes people think others want to listen to a baby crying, especially when they’re trying to concentrate. It’s phenomenally entitled. Can you drop them an email just saying that the baby keeps crying and can something be done to stop it distracting the class? Otherwise you’ll need to invest in a pair of headphones or find another class (there are LOADS of martial arts classes so you shouldn’t have too much trouble finding one).