How do you determine redundant schools?

I had to import data from a system, that might've had the 'University of Louisville Speed School' as 'UL' 'U of L' 'U Louisville' 'Univ. Louisville', 'Speed School', etc.

If you're looking for exact string duplicates, it's fairly easy to just in SQL, assuming we're looking for duplicated entries of field1, field2:

SELECT COUNT(*) AS duplicates,
       field1,
       field2
FROM   some_table
GROUP BY field1, field2
HAVING duplicates > 2
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Then you know which records to bother looking at, rather than having to go through the whole table.