| 1929 |
Established and Opened Miura Middle School (Incorporated Foundation) |
| 1947 |
Established a new middle school under a new educational system |
| 1948 |
Established a high school under a new educational system |
| 1951 |
Reorganized into Miura Gakuen (Incorporated School) |
| 1959 |
Installed Engineering Divisions (Mechanical Engineering and Electrical Engineering) |
| 1960 |
Closed Miura Middle School/Introduced coeducational high school |
| 1963 |
Installed a new gymnasium and auditorium |
| 1986 |
Opened Martial Arts Annex (5 stories)/Established Liberal Arts and Sciences Course in the General Division |
| 1987 |
Installed a computer room |
| 1994 |
Established a Music (elective) Course in the General Division |
| 1997 |
Redesigned school uniform, built a new Technical Annex/Installed Electric Power Technology Course and Information Technology Course in the Electrical Engineering Division |
| 1999 |
Built a new gymnasium/Held a commemoration ceremony to mark the 70-year anniversary of the founding of the school |
| 2004 |
Converted school into a fully air conditioned facility |
| 2007 |
Renovated the 3rd floor of the school building as a part of the 80-year school anniversary project |
| 2008 |
Installed artificial turf and night lights, and renovated the 4th floor of the school building as part of the 80-year school anniversary project |
| 2009 |
Renovated the main building, held a commemoration ceremony to mark the 80-year anniversary of the founding of the school |
| 2010 |
Opened ”Sahara Sports Ground” |
| 2011 |
Redesigned school uniform |
| 2013 |
Established an Advanced Course in the General Division/Built a Seminar House |
| 2014 |
Renovated the library/Changed names of Mechanical Engineering and Electrical Engineering Divisions into Industrial Technology Division |
| 2017 |
Opened Sajima Nagisa-no-Oka Ground |
| 2018 |
Became authorized to teach the International Baccalaureate Diploma Program |
