Plugin for user information

Hi there,

I have a friend that i will be helping and installing wordpress for her. She has an english school and wants to allow her students to see their grades online, but only their grades.
Im in research of a plugin or something that will allow me to do that, does anybody have any suggestions ?

Basically i will create a table with 5 fields, and i need to display this info to that particular user only. I could go about coding my own plugin or something since i have a fair knowledge of php and dbs but i am wondering if there is anything like this out there already.

Thank you and keep up the good work!!!