I am doing a promotional video for a corporation that has a projection unit that is used in classrooms.

I need royalty free shots facing students (younger and college age) raising their hands and looking excited about what they see. It needs a lot of engagement.

I will use this, then cut to the front as though they are looking at my company's product. I can't seem to find much of this type of footage.

Any great sources for low-cost video stock footage of schools, classrooms and education?

Thanks,

Ted