CREATE TABLE table_9622 ("School Name" TEXT, "Start" TEXT, "School District" TEXT, "Year Open" FLOAT, "2012 Enrolment" FLOAT)

WHAT IS THE HIGHEST 2012 ENROLLMENT FOR cole mathieu-martin, AFTER 1972?
SELECT MAX("2012 Enrolment") FROM table_9622 WHERE "School Name" = 'école mathieu-martin' AND "Year Open" > '1972'
SELECT MAX("2012 Enrolment") FROM "table_9622" WHERE "School Name" = 'école mathieu-martin' AND "Year Open" > '1972'