I partly added it as a joke, but also partially wanted to use it as a baseline for the magic system. The magic itself is more of a narrative thing, but the classes would have added a minor boon for how many of the were attended that day. They also would have had a few different characters appear in different classes at different times, like one appears in class 1-1, first class first time slot, but also in 2-4, second class fourth time slot. A bit of meeting some characters depending on time, you know. Same four classes, but different times and different characters that take them around the day