[Crisco]

No, but the students that learn and distill what the professor teaches are not obligated to use that information only how the professor wants them to.

[petilon]

Can the professor refuse to teach some students, or must he teach all comers?

[xboxnolifes]

One can teach whoever they want to or don't want to. If one joins a university, that changes things. They are now part of an organization larger than themself.

[lostmsu]

glhf under the circumstances