I have a workbook that will have 26 worksheets, the first worksheet will
serve as an index of data for a roster of students. The other worksheets
will be divided by individual teachers. I need a formula that will search all
the 25 worksheets for an individual student, then average the data for each
student. I tried VLOOKUP but it will not give an average of let say 6 sets of
data or scores from the 25 sheets.

Let me suggest a fundamental change in the structure of your file. Put ALL
the data in a single worksheet, with one additional column specifying the
teacher. Then use Excel's built-in sorting and filtering to view, analyze,
and report on that data. Much easier approach

"altschool" wrote:

I have a workbook that will have 26 worksheets, the first worksheet will
serve as an index of data for a roster of students. The other worksheets
will be divided by individual teachers. I need a formula that will search all
the 25 worksheets for an individual student, then average the data for each
student. I tried VLOOKUP but it will not give an average of let say 6 sets of
data or scores from the 25 sheets.