My first organic chemistry exam, I struggled to understand the material, watched each lecture twice, and read the text and STILL made a D. Someone reminded me paying for the class a second time would be MUCH more expensive than simply paying for clutchprep and watching the lessons on it. Second exam WITH clutchprep, not only did I make an A, I truly understood what I was doing. Johnny breaks everything down so simply and the wealth of material is so great, I wish I would have gotten it before that first exam. I will continue using clutchprep until I graduate.