Working across multiple worksheets

Hello!

I have some newbish questions I would like to have answered. Right now I am working on a little project trying to work across multiple worksheets. First work sheet will have: Col 1: Name, Col 2: Level, Col 3: Class, Col 4: Total, Col 5-X: Numbers. There are about 150-200 entries in this, but only 8 different classes. So, I would like to set up a worksheet for each class. And I want to be able to edit one of them, and have the new data change for the master, or visa-versa. What can I look into to do this? Any help is greatly appreciated. Thanks in advance

-Imrac

You can group the sheets together,
press the ctrl button an click on the sheet tabs you want to group,
enter the information on one sheet and the rest will change, right
click on the sheet tab to ungroup the sheets