Formula to grab value from a cell and use that to refer to a cell in another spreadsheet?

Question

I need help creating a formula in a cell in a spreadsheet that would allow me to grab a value from another cell and use that value to refer to yet another cell in another sheet.

For example, in a cell that returns a student's class grade (a progress report sheet) I have the cell refer to my master grade sheet (eg. the progress report sheet's cell would be: =mastersheet!E[grab value in cell A1 of current sheet])

What formula do I use to grab a cell's value and use it to define/refer to another cell?

Answer 1

In Excel, if Sheet1 A1 contains B2 then in Sheet1 =INDIRECT("Sheet2!"&A1) will return the contents of Sheet2!B2.

In Google Docs spreadsheet, if Sheet1 E1 contains 4 then in Sheet1 =Indirect("Sheet2!E"&E1) will return the contents of Sheet2 Cell E4.