I had experience with Sylvan Learning Center which I believe is similar. I enrolled my 6th grade son with them for MATH ONLY. We paid near 6000 for 108 hours. It worked.
I also got to know one of the instructers as due to my son being enrolled there I had an apartment for rent and he became one of our tenents.
I can not offer advice on all around subjects but just what I needed which was math. My son has had a complete turnaround. They pinpointed exactly where he was lost in math somewhere back in 2nd grade and began there. He did not approach a new skill until the last one was mastered. To me it was a complete success. He just started 8th grade and is doing pre -algebra on his own. : ))))
I wish we could have done this at home. We were at our wits end. Any attempt to have him due math turned into arguements and severe crying fits. My husband and I were at the end of the rope so to speak.
We did do most of the work over the summer. He either went 4- 6 hours per week at 2 hour sessions.
They also do a reward program.
Again I am only speaking for the one subject which we did MATH. I have no idea how an all around program would work.
We are going to talk to Sylvan and other schools.
Thanks, again.