When a student is not in school, he/she has every right to post a website despite the school's position.
Private schools can have conduct policies which goes beyond school hours. There are Catholic Schools that have banned teachers for adultry for instance.
Not if it's a private school. Private schools can pretty much make whatever limiting conduct rules they want. If the students don't like it, they can go somewhere else. It's not like public school where the student is "trapped".
When a student is not in school, he/she has every right to post a website despite the school's position.
- - - - - - - - - - - - - - - - - - - - -
Perhaps. However the school can invite such students to seek their education elsewhere, and has that right too, as a private institution.
As a private Catholic school, do you believe they have the right to deny enrollment to a student who actively participate in a public Satanic Cult? Why would this be different?