I need comparative data on the cost and effectiveness of different
types of tutoring for reading and math for elementary school age kids
(a first grader and a fourth grader).  In particular, I'm interested
in the effectiveness (as defined by increase in grade-level ability)
of Score!, Kumon and eSylvan.  If there are other programs that have
PROVEN effective, I would be interested in hearing about them as well.

A good answer for me would be that (I'm making this up) after 2 years,
a customer of X can expect their child to be reading one additional
class level.

I can't speak to the effectiveness of programs like Sylvan (and
haven't found much data), but if you're interested in Math tutoring
for your fourth-grader, this might interest you:

ALEKS
http://www.aleks.com

The "Basic Math" program covers grades 4 - 6.  My eldest son (a 5th
grader) was doing very poorly in Math - his initial assessment in
October showed that he hadn't yet mastered about half of the concepts
he should have finished in fourth grade.  His most recent assessment
shows that he has completely caught up and it now performing right
where he should be.

--Missy

http://www.passportwi.com/compare.html