Belling the Cat is an old fable (possibly Aesop) about a group of mice looking for a solution to a cat sneaking up and killing them. The solution proposed was to put a bell around the cat's neck so they could hear it coming. A wise member of then group then asked "how do we get the bell on the cat's neck?".
$400 million in donations would solve our problem (and as you astutely pointed out, it will be far easier to raise these funds if labelled as donations). As soon as you figure out how to raise it let the school know.