This is something that I have every student take home and fill out the first day of school. If your school is anything like mine, getting information from the office isn't always easy, and isn't always correct when you do get it...This form makes it easy to keep it on file (it's only half an 8x11 sheet of paper), and if you alphabetize them, they are easy to sort through.
I usually print mine on card stock, as it holds up a little better than regular paper, and it needs copied double-sided so that you have the contact info on the front, and other info on the back. After you make the copies, just use a paper cutter and slice them in half, and voila - easy access to student information.
NOTE: I am a big fan of technology, but sometimes going "old-school" is the way to go. When you need info on a student and the computers or internet are down, it's nice to have a hard copy of things on hand!