CREATE TABLE table_37449 ("School" TEXT, "Mascot" TEXT, "Location" TEXT, "Enrollment" FLOAT, "IHSAA Class" TEXT, "IHSAA Football Class" TEXT, "County" TEXT)

What is the IHSAA class for Portage?
SELECT "IHSAA Class" FROM table_37449 WHERE "School" = 'portage'
SELECT "IHSAA Class" FROM "table_37449" WHERE "School" = 'portage'