The exterior is a traditional colonial revival style façade.
 The building is one story high with a partial basement for utilities and storage.
 It has a rectangular footprint measuring 94 feet (29 m) east–west and 56 feet (17 m) north–south.
 The perimeter foundation is made of steel reinforced concrete.
 The structural walls are a steel-reinforced wooden frame with a textured red brick veneer exterior.
 This combination makes the structure extremely solid.

The building has a hip roof with composition shingles.
 The peak of the roof is 31.5 feet (9.6 m) above ground level.
 There is a horizontal box cornice that runs along the roof eave.
 It serves as the top frame for the building's large windows.
 The windows are symmetrically places in sets of five in two main banks on the north and south sides of the building.
There are also three sets of two windows on the south side below the gable where the original entrance was once located.
 All the windows are eight-over-eight double-hung wood sash windows.
 The four main window banks also have eight-pane awning windows above the eight-over-eight windows.
 There is a single pair of eight-over-eight windows near the north end on the east and west sides of the building.
 Both the east and west sides of the building have a double-door entrance with a fifteen-pane transom window above the doors.

The original pediment entrance was in the center of the south side of the building.
However, that entrance was closed and covered with brick facing during the 2005 renovation.
 Also during that 2005 makeover a new main entrance was created in the center of the north façade where the external basement entrance was originally located.
 The new main entrance is a colonial revival style pediment portico with a clapboard covered gable end.
 It was carefully designed to be compatible with the historic character of the building.
The exterior is a traditional colonial revival style façade.  The building is one story high with a partial basement for utilities and storage.  It has a rectangular footprint measuring 94 feet (29 m) east–west and 56 feet (17 m) north–south.  The perimeter foundation is made of steel reinforced concrete.  The structural walls are a steel-reinforced wooden frame with a textured red brick veneer exterior.  This combination makes the structure extremely solid.
The building has a hip roof with composition shingles.  The peak of the roof is 31.5 feet (9.6 m) above ground level.  There is a horizontal box cornice that runs along the roof eave.  It serves as the top frame for the building's large windows.  The windows are symmetrically places in sets of five in two main banks on the north and south sides of the building. There are also three sets of two windows on the south side below the gable where the original entrance was once located.  All the windows are eight-over-eight double-hung wood sash windows.  The four main window banks also have eight-pane awning windows above the eight-over-eight windows.  There is a single pair of eight-over-eight windows near the north end on the east and west sides of the building.  Both the east and west sides of the building have a double-door entrance with a fifteen-pane transom window above the doors.
The original pediment entrance was in the center of the south side of the building. However, that entrance was closed and covered with brick facing during the 2005 renovation.  Also during that 2005 makeover a new main entrance was created in the center of the north façade where the external basement entrance was originally located.  The new main entrance is a colonial revival style pediment portico with a clapboard covered gable end.  It was carefully designed to be compatible with the historic character of the building.
Sisters High School (historic)