CREATE TABLE table_65219 ("School" TEXT, "Location" TEXT, "Mascot" TEXT, "County" TEXT, "Year Joined" FLOAT, "Year Left" FLOAT, "Conference Joined" TEXT)

What's the highest Year Left for the School of Danville?
SELECT MAX("Year Left") FROM table_65219 WHERE "School" = 'danville'
SELECT MAX("Year Left") FROM "table_65219" WHERE "School" = 'danville'