Vlookup / Min Array question

[katharineeileen]

I'm trying to use =MIN(IF(Lookup_ID=A2,Grad_Year)) to find the minimum Grad date for an ID that has multiple IDs in the data set. Normally I'd use =VLOOKUP(A2,'Grad Info'!A2:B53597,2,FALSE) but the multiple IDs with different Grad dates is throwing me off. I'm looking for the minimum Grad date for a specific ID - not the minimum of the dataset.

I am using Control + Shift + Enter, is there anything else I'm missing? I keep getting 0's for all the rows, even though 0 is not even the minimum of the Grad dates.