The daily calendar at GHS is based on the block system of four academic periods each day lasting 18 weeks, which allows students to take up to 8 classes a year.

Due to the size of the student population there are three lunch shifts. An Activity Period allows time for school-wide physical activity (walking), reading, and clubs. School begins on a delayed start time of 8:00 A.M. on Thursdays to allow for faculty team meetings.

GHS Schedule:

1st Period:  7:40 - 9:15 A.M.

Activity Period:  9:15- 9:43 A.M.

2nd Period:  9:50 - 11:05 A.M.

3rd Period (including lunch periods):  11:12 - 1:05

4th Period:  1:12 - 2:40