There’s no list for this. The discretionary powers lie with the
principal. But “staying home to study for the last 1 month and skip
school lessons” is pretty common, so unless your teachers, HODs, or
principal have other reasons (strong reasons, like disciplinary
problems) to ban you, otherwise it shouldn’t be an issue, don’t
worry.
Of course, you could always contact your teacher (eg. via email)
to explain yourself and gauge by his/her response whether you have
anything to worry about or not.