CREATE TABLE table_15917 ("School" TEXT, "Location" TEXT, "Founded" FLOAT, "Affiliation" TEXT, "Enrollment" FLOAT, "Team Nickname" TEXT, "Primary conference" TEXT)

How many of the schools listed are in Ames, IA?
SELECT COUNT("Primary conference") FROM table_15917 WHERE "Location" = 'Ames, IA'
SELECT COUNT("Primary conference") FROM "table_15917" WHERE "Location" = 'Ames, IA'