Re: 'In-Character' school rules.
- are there curfews?
very loosely enforced ones, since it benefits everyone if girls break them and go wandering about in the dark
generally students don't leave the school grounds without permission and should be within the dorm block by 9pm
- are there school uniforms?
http://shokushu.com/campus/uniform.html - if so, when are they issued? back on earth before the plane ride, or at some sort of commissary at the school?
Since they tend to get damaged so often they are available from the admin office
- also if so, when do we have to wear them? only to class?
During the school day. Casual clothing can be worn at other times but should be appropriate to a respectable establishment such as a school for young ladies
- is there a formal, in-character, discipline system that could, for instance, get a girl sent to the NICE labs?
- if so, who enforces this system?
http://shokushu.com/admin/office07.htmlI would especially draw your attention to the final section
A trip to the labs isn't necessarily a form of discipline. It can also be a field trip as part of a science lesson, a way to gain extra merits by volunteering to assist with research, etc.