Insert Multiple records at the same time

I need to be able to insert multiple records into a table at the same time from one form.

Eg:

I have an update form that lists results for all students. I need to be able to change the result of each student, then at the bottom of the form click on a button to update all records on that form.

An extension for this would be great, or if there is already something out there i would appreciate it if you could tell me where..

thanks in advanced..