Anime that is school appropriate

I recently started anime club and don't know what anime to watch as a club. It is 40 mins long so I can't just see a ghibli movie with the club. I am also not sure if the shonen fans would enjoy slice of life and same with slice of life fans for shonen. So if you have any suggestions for really good anime that contains a minimal amount of blood and no sexual content or partial nudity I would be most grateful. (Because I can't even think of an idea)