Can someone reassure me about DD starting secondary?

[ButtCheeks]

DD starts secondary in September. The school is very highly rated and has excellent results. It is known for being very strict.

We went to the introductory meeting/presentation thing, and I have to say, it killed my soul a little bit.
They have 5 minutes between lessons to get to the next one, one 20 min break in the morning, and half an hour for lunch.

They were saying they expect 100% focus at all times during lessons, absolutely no lateness, and I imagine any bathroom trips must be during breaks.

Am I being a bit ridiculous in thinking this sounds gruelling? I mean, obviously thousands of students do this on a daily basis and do just fine. I’m all for healthy discipline and structure and not taking the piss but why do I feel a sense of dread for my kids entering this institution?

DD is great academically and socially and is a very switched-on, creative child and would no doubt be fine so I wonder why I’m struggling with this perfectly normal transition.

I also worry pre-emptively about DS (8) who is summer born and how he will do when the time comes.

How did your kids cope in year 7?

It’s a big adjustment for them. The only thing in you op that I would raise an eyebrow at is the 30 min lunch break. That seems very short….
At my DDs school it’s an hour but they are strongly encouraged to use the time well doing lunch time clubs at least a couple of times a week and pretty much everyone does.
Ds is staring the boys school in September who also have an hour for lunch and we’ve been told it’s
compulsory to do a minimum of one academic and one sporting club a week during lunch. Ideally they would like them to do more.