Below is a piece I have used before, can you please listen and give thoughts on whether it would help you guys?
Every school is going to have a sort of culture to it, and music (or lack of music) is a part of that culture.
Personally whale sounds would probably cause me to walk out the door... that is not going to get me moving. Maybe for stretching? But for a workout, nope, not for me.
That's fine though, your school clearly has a very different culture in that regard and if it's working for you rock on.