I volunteered as a tutor for a non-profit company a few years ago.  The job description included obedience to a 15 page paper handout of tutorial standards from a book by Marian Arkin.

Marian’s book is still available:

Her book is available from www.amazon.com  for a penny. In view of recent postings about anecdotal advice, and the market value of the originally copyrighted documents, I hereby posses and profess the ideas about “tutors” and “tutees” that Marian wrote about.