Fillng in excel cells automatically using data

I am wondering if and how this can be done:

I have a spreadsheet that has three columns for Highschool name, State and CEEB code.

As of now, we have to manually look up the CEEB code and fill them in.

Is there a way i can give excel the entire list of all HSs and CEEB codes, 开发者_运维问答so when I enter a High School and hit tab, it fills in the CEEB code automatically if it exists in the list provided to excel.

On a separate sheet, list the highschools and CEEBs. If you put the high school name in A1, put this formula in B1

=VLOOKUP(A1,Sheet2!A1:B100,2,FALSE)

with your high schools and CEEBs on Sheet2 and in the range A1:B100. Adjust to fit your actual data. If you don't have anything in A1 and don't want to see an error, use this formula

=IF(ISBLANK(A1),"",VLOOKUP(A1,Sheet2!A1:B100,2,FALSE))