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I have two MS Excel spreadsheets - one from the 2012-2013 school year and one from the 2013-2014 school year. Each spreadsheet has columns with student name, address, phone number, and email. I need the students that registered for the 2013-2014 year removed from the spreadsheet with 2012-2013, so I have a new spreadsheet of students that didn't re-register, so we can contact them about enrolling. Each spreadsheet has approx. 300-500 rows