244. The OWLs can be challenged the same way muggle American APs can (you can take the test without taking the class). Some muggleborns will take the Muggle Studies OWL without actually taking Muggle Studies their 3rd-5th years so they can take it at the NEWT level. That’s when they go over muggle pop culture and media. (Basically they just want to watch Dr. Who reruns and talk about celebrities).