CREATE TABLE table_72069 ("Player" TEXT, "No." TEXT, "Nationality" TEXT, "Position" TEXT, "Years in Toronto" TEXT, "School/Club Team" TEXT)

What school did player number 21 play for?
SELECT "School/Club Team" FROM table_72069 WHERE "No." = '21'
SELECT "School/Club Team" FROM "table_72069" WHERE "No." = '21'