CREATE TABLE table_5612 ("School" TEXT, "Location" TEXT, "Mascot" TEXT, "County" TEXT, "Year Joined" FLOAT, "Previous Conference" TEXT, "Year Left" FLOAT, "Conference Joined" TEXT)

Which Year Left is the lowest one that has a School of calumet, and a Year Joined larger than 1993?
SELECT MIN("Year Left") FROM table_5612 WHERE "School" = 'calumet' AND "Year Joined" > '1993'
SELECT MIN("Year Left") FROM "table_5612" WHERE "School" = 'calumet' AND "Year Joined" > '1993'