A science teacher recorded a Bill Nye the Science Guy episode covering Newton’s Laws. She made it at home and used her own DVD. She uses the entire episode every year in her classroom. This is permissible.
A student finds a photo online of a tiger. Since the school mascot is Terry the Tiger, he uses this photo as a graphic element on the school’s web page. He cites the website from which it was copied. This is fair use.
A school can only afford one copy of Kid Pix. The load one copy onto the library computer so all students/classes have access to the program all day. The teachers install the Kid Pix Player on their classroom computers to evaluate the student work. This is permissible.
An elementary school transcribes the lyrics from the album “Chicago" and puts it on as the school mini musical. A teacher plays the music by ear on the piano and the students perform every song. There is no admission charged. This is legal.