All in all, this contract was far more restrictive than the last. Had Dumbledore had the chance to adjust his professor's class and responsibilities, now it was clearly detailed what was part of his duties and what wasn't. It gave Severus more freedom than ever before; it even suggested that he could take on promising students to serve as his assistances if he so desired. For masters, that was a common practice to discover if a student could become an apprentice. Since Dumbledore had taken over the headmaster position, that practice had fallen out of use.