I worked for a Sylvan Learning Center while I was in law school and I think they are wonderful. They are diagnostic and perscriptive and strive to get rid of skill gaps. though I did not receive a high salary, they were very fair.
I learned a lot about about their policies and most parents were pleased with the services. I now have a five year old I send to a Sylvan Center, and I am now one of those pleased parents. I would never trade my years working for Sylvan Learning Centers.