If you're sick&tired of your unreadable handwriting, then this is the thing for you! Plus you can even automatically add up distances for example. It's an Excel Sheet for editing on your PC. 99.9% identical with the printed one available at the school.
There are 2 versions:

nav flight plan.xls (23 KB, Excel 2000) (Right click to Save as...)
nav flight plan_95.xls (60.5 KB, Excel 5+) (Right click to Save as...)

...and a screenshot: