This is my amazing, awesome, super useful class markbook spreadsheet.
The sheets are protected as they are full of formulas that took me ages to perfect and that make data entry quick and easy as most cells will automatically fill in once data is entered in certain places. A password isn't needed to unprotect the sheets, so you can easily turn this function off in the Review section to modify the spreadsheet to suit your needs.
Instructions are included in the spreadsheet, but if you have any questions, concerns, or suggestions, don't hesitate to contact me.
I hope you enjoy using this product as much as I do!