CREATE TABLE tryout (pid DECIMAL, cname TEXT, ppos TEXT, decision TEXT)
CREATE TABLE college (cname TEXT, state TEXT, enr DECIMAL)
CREATE TABLE player (pid DECIMAL, pname TEXT, ycard TEXT, hs DECIMAL)

Find the states where have some college students in tryout.
SELECT DISTINCT state FROM college AS T1 JOIN tryout AS T2 ON T1.cname = T2.cname
SELECT DISTINCT "state" FROM "college" AS "T1" JOIN "tryout" AS "T2" ON "T1"."cname" = "T2"."cname"