(Poster from Grease; Wiki Commons)
If not the first high school musical, then certainly the one with the oldest "high-school student" actors. A classic scene from a flick with some pretty catchy tunes.
Lesson plan
And what would a musical be without the songs? Here's one of them, "Summer Nights," with a lesson plan below.
Video
Lesson plan
And what would a musical be without the songs? Here's one of them, "Summer Nights," with a lesson plan below.
Video
Lesson plan