Buna Junior High is a combination of buildings built at different times, with approximate timeline as follows:
- Main Building, containing 6 classrooms, offices, cafeteria, kitchen, and gym built in 1964.
- The 6th Grade wing containing 5 classrooms was built around 1970 (estimate)
- The library, a metal building, was built in 1985
- Classroom addition (6 classrooms), a metal building was built in 1975
- The band hall, a metal building, was built in 1980
- The field house, a metal building, was built in 1986
- The portables were brought in at various times in the late 1980's, with two from 1970, and comprise 13 classrooms (not counting the bookroom, which is in a portable also)
With 11 of a total of 30 classrooms in the brick buildings, only 37% of the classrooms are in the main buildings, leaving 63% of the classrooms in metal structures of which 13 or 43% of all classrooms are in portable buildings.
Source: Various, including District insurance records