- Nagano Prefectural Matsumoto Agatagaoka Senior High School
- Agata 2-1-1,Matsumoto-city,Nagano pref. 390-8543
- Full-time courses General and research courses Total number of male and female students 957 (R02.4.1)
- October 1922
- Approved by the Minister of Education to establish and open the school as the Matsumoto No. 2 Junior High School in Nagano Prefecture.
- April 1948
- Renamed to Nagano Prefectural Matsumoto Agatagaoka High School.
- April 1994
- English language course established. a specialized department.
- March 2018
- English language course closed.
- April 2018
- Exploratory course established.