CREATE TABLE table_66272 ("School" TEXT, "Mascot" TEXT, "Location" TEXT, "Enrollment" FLOAT, "IHSAA Class" TEXT, "IHSAA Football Class" TEXT, "County" TEXT)

What county has a school mascot of the Pioneers?
SELECT "County" FROM table_66272 WHERE "Mascot" = 'pioneers'
SELECT "County" FROM "table_66272" WHERE "Mascot" = 'pioneers'