Tutor

A tutor is one who privately teaches a single student or a very small group.

List of tutors

 * Aristotle - tutor to Alexander the Great. (AUDIO: Mask of Tragedy)
 * Bengel - a senior tutor. (AUDIO: White Ghosts)
 * Borusa - tutor to the First Doctor. (TV: The Deadly Assassin)
 * The Doctor
 * First Doctor - tutor to Jane Grey. (PROSE: The Nine-Day Queen)
 * Twelfth Doctor - tutor to Bill Potts at St Luke's University in the 2010s. (TV: The Pilot)
 * Marion Fleming - personal tutor to Alex Campbell in the 2190s. (AUDIO: An Earthly Child)
 * Bernard Helmann - Philosophy tutor at the University of Oxford. (PROSE: Come Friendly Bombs...)
 * Magrantine - a Kaled tutor. (AUDIO: Innocence)
 * Sepulchra - tutor to Caleera at the Time Lord Academy. (AUDIO: Scenes From Her Life)
 * Edward Stott - university principal who acted as tutor to an expedition seeking the Artifact around 2515. (PROSE: Parasite)