In order to graduate from St. Joseph Catholic School, each student must complete a minimum number of Carnegie units.

Indeed, it is something of a throwback to the days before Carnegie units, the 88-year-old system that equates learning with a passing grade and time spent in class.

Students typically graduate from high school after successfully completing about 20 Carnegie units in required subjects.

Some of these courses are taught on a block schedule, allowing the students to earn up to 8 Carnegie units in ninth grade.

To receive the high school diploma from the State of Maryland, Lycée Rochambeau students must complete a minimum of 21 Carnegie units.

Qualified students are identified as those who have completed a minimum of 14 Carnegie units with at least an overall B average.

The school offers a curriculum containing 160 Carnegie units, 16 of which are Advanced Placement.

The traditional college preparatory curriculum at Nolan Catholic requires 27 Carnegie units (3240 hours of instruction) for graduation.

All Liberal Arts College Preparatory Magnet students entering the program as 9th graders must earn a total of 32 Carnegie units.

Historically, Minnesota high schools awarded diplomas based on Carnegie units ("seat time requirements") or course credits completed by students.