A trimester system has been implemented in foundation programmes since 2009.

Courses are delivered using a trimester system with five period school days.

In the Upper School, the trimester system is again used.

Under the trimester system, there were three trimesters in a year instead of two semesters, and only five classes per day rather than six.

In 2008-09, the school started a trimester system.

However, when the new school year started in 2008, the schedule changed from the block system to the trimester system.

Under this system, the school year is divided into four quarters, as opposed to other schools' semester and trimester systems.

Most schools with a trimester system have a first term from April 1 to late July.

Hopkins' athletics function under a trimester system, with students taking an athletic for each of the fall, winter, and spring seasons.

The school runs on a trimester system with letter grades starting in 4th grade.