Internet "spying" on College Boy

With a computer, internet access and your child's id and password you can find out a lot! My son gave me his college id and password so I could check up on him--grades, financial, aid, etc. We agreed that since we are paying a significant portion of his college expenses that his dad and I should be able to check up on our "investment." Well, this week, I check on his grades, specifically interested on how he did on a psychology exam and then I emailed him a "Way to Go!" email saying he did a good job of getting a 47/50 on the exam. He actually found out from me first!