I'm not from the US, so I never got it - why do people donate to schools they got degree from? The degree wasn't free (usually very far from it), they weren't done a favor that they now need to repay. Anyone care to enlighten me? Do the donations open doors to some elite alumni club?
At most private schools donations are a way to ensure your children have a better chance of getting into the same school. Legacy students at Harvard for example have about 33% chance of being admitted vs the overall acceptance rate of 4.6%.