We absolutely love CLE. We've only been doing it for one school year so far. We're also catching up math with my oldest, after spending 2 years trying different things to make it "click" for her and falling further behind. She was behind in public school and would have never ever caught up in school, which is why we switched to homeschool. Nothing worked until CLE. It's very easy to go through quickly for catch-up, but still very thorough. LOVE the laminated sheets too! We also use the Language Arts sheets. My daughter is in 6th grade and we're close to starting the 5th grade level. We're working through the summers, skipping the quizzes, but still doing the unit tests just for my peace of mind, and doing math even on "holiday" days when we don't do other subjects. I started my son with CLE in kindy and he loves it as well. We do supplement for word problems with the Process Skills in Problem Solving workbooks. They were highly recommended here, and my kids and I love them.