While a bard can BE a professor or educator at a school (by choosing the College field), to obtain a mentorship the character must be able to prove they are worthy. This is where the audition skill helps.
Colleges are divided into four categories, which in turn can provide guidance for amateurs, authorities, experts and sages. A bard that has less than 30 points of practical skill, for instance, can audition for the lowest level of college available, but cannot expect to be received by a 2nd, 3rd or 4th degree college until they themselves have progressed in terms of the practicality study.
The college levels are as follows: Fochlucan (for amateurs), Canaith (for authorities), Anstruth (for experts) and Ollamh (for sages). Note that these names are those used generally for European colleges; various other names will exist for Asian, African, Goblinish or Orcish cultures.
To apply, the character chooses the college where they wish to audition, then receives a day within a 4-8 week period when this audition can take place. Fochlucan colleges will exist in all cities of more than 16,000 persons. The character then presents their work, defends it, then makes both a wisdom check and a charisma check to see if they were accepted. If so, they may then take advantage of the school's facilities. Once accepted, all colleges throughout the game world will be informed of the acceptance.
A bard may be a member of only one college at a time. However, they may give notice that they are leaving a given college and moving elsewhere; they may then be allowed to apply elsewhere, with no regard given to their earlier success (they must prove themselves again).
A change in college must be made upon obtaining a greater knowledge status (from amateur to authority, say) if any further benefit is to be gained from the bard.
Bards may apply to as many colleges as they wish, but they must do so one at a time. If not accepted at a college, the bard must wait a full year before attempting to audition again.