the theme is nympho music teacher, and a bunch of kids,who want more than music lessons. please name it?

Question

The film starts with a young boy burried up to
his neck on a beach, along comes a young
boy with his bucket and spade,he stand over this
boy that is burried and pees all over him.There
are various scenes encountering a group of mischievios boys.The one scene is were they have discovered that a music teacher give her pupils more than just music lessons at a price, however when one of the pupils try it on with her,it wasn't her but her sister that took over the lesson, and knows nothing about the antigues her sister is involved, and when the amouros pupil trys it on gets a black eye for his trouble.Have seen this movie a number of years I can not recall the title, Has anyone out there any ideas

Answer 1

Here's a list of movies with the keyword "music teacher":

http://imdb.com/keyword/music-teacher/?sort=date