I use these cards to keep all of my client information on. This is an easy way of taking the cards that I need with me anywhere and provides security not necessarily available by listing all of the same sensitive information into the computer plus it would be a nightmare if the computer were to crash and all of my info was stuck in there. Happened once already never again.
I am in the nursing program and I use these cards all of time. They are big enough for a lot of info and not too big that they are cumbersome. They make studying easier.
Used for study guides for school. I would just recommend that they come in smaller packages as I really did not need 500. It would have been better if you had a smaller pack like you do for the smaller index cards.