Many educational services provide videos to teachers specifically for the purpose of screening in class.
In general, showing a film at school for students is permitted under U.S. copyright law, but holding a public viewing with parents or other community members is not allowed.
Check with your school technology or AV teams for best practices and institution policies.
In addition, many streaming services are blocked at schools, which might prevent you from streaming content on a school device.
Remember, different devices within the same school may have different blocks, and permissions are constantly updated by schools and streaming services.
So just because you successfully screened a clip using your Netflix account last semester, it doesn’t mean it will work this spring, especially if you switched classrooms and/or devices.