Over its almost forty-year history, Coffman has gone through many additions and upgrades; the most major include the expansion of the B building, which now houses the English, World Languages, and Social Studies departments, and the addition of the A building, which encompasses the library, technology- related classes, Mathematics, and Science departments.

In the 2009–2010 school year, Dublin Coffman underwent a series of renovations to the building.

These renovations made it possible to add 10 classrooms, seal the outdoor courtyard, add classrooms off of and below the bridge between the A and B buildings, and move the location of the administrative offices and main entrance to the opposite side of the building .

The Rock Shop was moved from its original location to the cafeteria, near the girl's restrooms.

The Dublin City School District has been awarded Ohio's highest academic rating, Excellent with Distinction, for its eighth consecutive year[when?].