Process of providing support to a pupil or student (remedial or additional teaching to grasp new concepts, review of previous classes, completion of assignments, preparation for exams) to help him/her improve his/her performance.

Comment
  • Tutoring takes place in a non-classroom setting, either online or in-person;
  • the tutor must have a proficiency in the subject matter;
  • this term is close to, but not synonymous with: mentoring.
Source

Cedefop.