Mr. Mukoyama was born in Tokyo in 1943.
He graduated from Tokyo Gakugei University. He had been a teacher at a public elementary school in Tokyo for many years when he founded a new educational movement called ‘Kyoikugizyutu no Hosokuka’. Later he presided over TOSS (Teachers’ Organisation of Skill Sharing), which still collects excellent educational skills and methods from all over Japan and aims to make them a shared property for all. TOSS is currently the largest educational organization in all of Japan with 700 circles and 10,000 members.

He was a creator of school textbook questions for NHK’s ‘Quiz Omoshiro Seminar’, a visiting professor at Chiba University, the president of The Japan Society for Educational Skills, and a visiting professor at Shanghai Normal University.

As editor-in-chief, he also compiled numerous educational magazines such as “Kyoshitsu Two-Way” and “Mukoyama-gata Sansu Oshiekata Kyoshitsu”. “Golden Three Days”, “Monster Parent”, “Class Collapse,” etc. are all his coined words.

He has authored, co-authored, and edited over 3,000 books.