On May 16, 2019, we completed a thorough study on the effectiveness of our program. The results are THRILLING!
The following criteria were used to select a sample of 224 students for Foley Prep's SAT study.
The increase in score due to Foley Prep's program was calculated by taking the difference between the lowest score and highest score received on a practice test at Foley Prep. Official College Board released tests were administered under officially-timed conditions at a Foley Prep hub. This method results in a lower number than if we were to start with a student's PSAT as a baseline … we believe it is more fair to compare a student's performance on an SAT taken later than the PSAT, which is generally lower.
The resulting sample size of 224 qualifying students had an average score increase of 149.9 points (standard deviation 69.8 within a possible SAT score range of 400-1600). A 1-sample confidence interval was constructed using a 5% significance level (95% confidence). The confidence interval bounds were 140.7 to 159.1 (149.9 ± 9.2).