This is a complete set of problems and answers from the NICHINOKEN 2025 academic year for 4th graders, covering tests from the entrance exam through May. The items included are: * 3rd Grade NICHINOKEN National Test (held on January 12, 2025) * 4th Grade Learning Skills Development Test, 1st Session (held on February 22, 2025) * 4th Grade Learning Skills Development Test, 2nd Session (held on March 8, 2025) * 4th Grade Learning Skills Development Test, 3rd Session (held on March 22, 2025) * 4th Grade Learning Skills Development Test, 4th Session (held on April 19, 2025) * 4th Grade Learning Skills Development Test, 5th Session (held on May 10, 2025) * 4th Grade Proficiency Test (held on March 1, 2025) * 4th Grade Proficiency Test (held on April 26, 2025) * 4th Grade Spring Break Special Test There are a total of 9 tests. Since these are tests that students actually took, there are some writings on them, but the number of pages with writing is not large (about 80% of the pages have no writing). Most of the writing is in pencil, but there are 4 pages with writing in pink marker (photos of these pages have been uploaded). This can be used as a reference for those considering joining the 4th grade next year.