My child was able to pass their first-choice school using Shinken Zemi. I think it's a very well-made educational material. Since they were aiming for a difficult school, we chose the high-level course for math. Everything is filled in. The April practice workbook has water damage from a spilled drink. The calculation and one-line problem drill is not filled in, but the January issue is missing. These are items that my child used, so please refrain from purchasing if you are sensitive to condition.