Oh yeah, RE is "optional" here, too. You don't have to go, but if you don't you need to take ethics if there are any teachers qualified to teach it. If not, you just sit there with the rest of the class, but don't have to do anything.
The joke being, there are two hours a week for RE and one for chemistry, physics and biology.
The joke being, there are two hours a week for RE and one for chemistry, physics and biology.