Go into the student record, click on the address tab and then click on the "Geocode" button and see it per student :

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OR
 
From the student tab, Filter for the desired students, drop down "Operations" / click Reports / Student Reports / click at "Select" / check beside the data needed on the report (Coordinate is what will show at the long/lat)


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The Coordinate is what will show the long/lat in an excel spreadsheet, here is an example of that :

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