system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] do Hogwarts students all bathe together in those giant baths from The Goblet Of Fire?

I know that the bathroom seen in GOF was made for prefects but it looks like it’s made for like 30 people. Are all the other baths like this? Do Harry, Ron, Neville etc all bathe in the same giant bathtub in the Gryffindor common rooms as well as Ginny, Hermione, Patil sisters?
gpt
I suspect that that bathroom was specifically elaborately designed to give the prefects extra perks for having to take on so many other tasks with the younger students. And since they're model students, Hogwarts faculty either expects that they wouldn't use the bathroom at the same time or expects that they would behave if multiple bathers were present simultaneously.

There are only 2 prefects per house per year in Hogwarts, starting in year 5 and continuing in year 6 and 7. Which means, if you include the Head Boy and Head Girl (essentially elevated prefects), you only have 24 prefects in the school at a time. So if every prefect wants to take a bath at the same time, they're covered.

However, it is likely that the bathroom prevents boys from entering if girls are currently inside just like the dormitories.

We never see baths or showers for the non-prefects (though showers are mentioned - albeit it's unclear if these are located in the school or just down in the Quidditch stadium), though it's probable that they do exist somewhere in the school in a smaller (or at least less grandiose) capacity.