Comparing and talking about educational systems (Spain/Japan)

Before coming to Japan I wrote this post selecting to find someone who teaches here to tal about the educational system and compare pros and cons.

https://www.reddit.com/r/AskAJapanese/s/UYoy8vbCxD

Now I'm leaving tomorrow (I'm in Tokyo) and I just found this sub Reddit.

Probably finding a person to talk today will be difficult but it might be possible to get someone to do a video chat and talk about it.

In the mean time. What are the things you consider are making a difference here in Japan? What do you think is missin?

How do you think bowing before class or changing shoes on school affect their behaviour?

Extra: I work in K-12 I'm also interested in high school.
I'll edit the first post with extra info.

I'm looking for information about school organization and pedagogy. Schedules, things like having judo or another activity as part of the curriculum is quite a different and I wonder about the impact of that.

Specific questions:
Is there a PE class apart from the judo/kendo… class?

Do they value teaching arts here like music? How do they do it?

How much extra cost means uniforms for families?

Do students usually use subjects books here?

How are new technologies being implemented?

by Aspid92