Thank you for viewing. This is the 2025 revised edition. Regarding shipping: For example, If you purchase between the evening of the 1st (Monday) and the 7th (Sunday), your order will be shipped on the 13th (Saturday) or 14th (Sunday). If you purchase between the evening of the 8th (Monday) and the 14th (Sunday), your order will be shipped on the 20th (Saturday) or 21st (Sunday). If you purchase multiple books, we may be able to offer a discount on shipping. Please comment. (This may not be possible depending on the thickness of the books.) If you purchase multiple books without commenting, we may ship them together at the original price. α Standard Series. A year-round textbook designed to improve academic ability up to the level of top public high school entrance exams. It systematically and effectively improves academic ability from the basic level to the level of top public high school entrance exams. It includes well-designed problems and also includes thinking skills problems to address the recent trend of slightly higher-level entrance exam questions. It allows you to gradually and effortlessly develop your skills from the level of public high schools to the level of mid-tier private high schools. With detailed level settings, dividing the practice problems and chapter-end problems into two stages, A and B, you can steadily progress through your studies step by step. There is also a "Test Preparation Special Feature" at the end of the 3rd-grade volume.