C2 delivers results for our students. Whether measured by improved test scores, improved grades or entrance to some of the most competitive colleges in the country, our ability to impact a student's performance is clear. Read what our students and parents have to say about our ability to make positive change, along with endorsements from our educational partners.

And we stand behind our results. If a student diligently follows our recommended course of study for SAT prep and does not improve their score by at least 10%*, we'll provide an additional 10% of the recommended hours of study for free. We have a similar guarantee for students of all ages with their basic skills tests. These guarantees have been a part of our business since the very beginning, and we're happy to offer them. We're even happier and prouder to report none of our parents or students have ever had to make use of them. Not one.

* Only applied to students whose scores are below 2000.