Just seems like the sort of product that delivers a bunch of facts you already know. It's not as if the teaching staff doesn't know what kind of expressions are

Just seems like the sort of product that delivers a bunch of facts you already know. It's not as if the teaching staff doesn't know what kind of expressions are on their students faces, or which ones don't pay attention. If the administration wants data, paying someone to sit in classes to observe once in a while is probably cheaper.