Is a student's study considered based on what is unlawful if teachers photograph parts of external notes marked "All rights reserved" for use in private lessons, even though students do not buy these notes but content themselves with what the teachers tell them from them, and what is the solution if studying is unlawful given the difficulty of changing teachers?

The phrase "copyright reserved" often means that the book should not be reprinted, not that it is forbidden to benefit from it by photocopying a part of it, especially for students. Therefore, there seems to be no objection to relying on summaries photocopied by teachers from copyrighted books, especially since some scholars see no harm in it if it is for personal benefit.