I took two prep courses during my junior and senior year. The first was at Kaplan. I did fairly well and received a 1900 but I felt their teaching methods were too general and didn't delve into to the material well enough. When I joined Khan's for SAT prep, their teacher gave me some great test tips that I wish I knew the first time. Their strategies helped me big time; I got a 2250.
For half the price of other SAT prep services out there, you're getting more than your money's worth. My only complaint was they opened in Ozone Park a few blocks away a year AFTER my exam...
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