Call it what you will

The first day of school starts and everyone groups in huddles and try and see which color class the get in. The object of how the school system works is each student picks out of 4 colors to choose from then crumbles it up in their hand and waits until administration gives them the okay to open them up. Once everyone sees their colors they then walk over to their groups and begin to head into the school assigned to their colors. The colors are purple, yellow, blue, and red.