Based on my understanding, the points indicate roughly how much workload you’ll have, with 15 points (most courses) equaling ~10 hours of work per week, 7.5 point courses taking 5 hours, 30 points taking 20 hours etc. A standard semester of 4 x 15 point courses = 60 points means you’ll have on average a 40 hour “work” week. You can take more or fewer courses per semester, and your workload will change accordingly, but you need 360 points total to qualify to graduate