CREATE TABLE table_63744 ("School" CLOB, "Location" CLOB, "Mascot" CLOB, "Enrollment" FLOAT, "IHSAA Football Class" CLOB, "Primary Conference" CLOB, "County" CLOB)

What is the primary conference with a IHSAA Football Class of A, at South Decatur school?
SELECT "Primary Conference" FROM table_63744 WHERE "IHSAA Football Class" = 'a' AND "School" = 'south decatur'
SELECT "Primary Conference" FROM "table_63744" WHERE "IHSAA Football Class" = 'a' AND "School" = 'south decatur'