A retired teacher, I tutor high school/junior school math, by email, to raise funds for the Ottawa Hospital, specific units. Although I receive no funds myself for this service, I ask for a substantial donation ($300+) to the hospital in lieu of payment to me [and that's cheap, if you think about hourly rates]. Tutoring is over the entire remainder of a semester ...advice is given if too late into the semester for likely success. The number I can tutor in one semester is limited ...I am retired, after all. Recipients get textbook quality replies. I may be reached at, [d a v i d_d i x o n @ s y m p a t i c o . c a] no spaces, for more detail and terms and conditions, but would answer any general questions here.