CREATE TABLE table_5569 ("School" TEXT, "Location" TEXT, "Mascot" TEXT, "Enrollment" FLOAT, "IHSAA Class" TEXT, "# / County" TEXT)

What IHSAA clas is the school with a county number of 12 clinton and the hornets as their mascot?
SELECT "IHSAA Class" FROM table_5569 WHERE "# / County" = '12 clinton' AND "Mascot" = 'hornets'
SELECT "IHSAA Class" FROM "table_5569" WHERE "# / County" = '12 clinton' AND "Mascot" = 'hornets'