CREATE TABLE table_204_624 (id NUMBER, "school" CLOB, "team name" CLOB, "town" CLOB, "county" CLOB, "enrollment  ( 2010-11 & 2011-12 ) " NUMBER, "primary mshsaa class*" NUMBER, "football class" NUMBER)

how many of the schools had at least 500 students enrolled in the 2010-2011 and 2011-2012 season ?
SELECT COUNT("team name") FROM table_204_624 WHERE "enrollment (2010-11 & 2011-12)" >= 500
SELECT COUNT("team name") FROM "table_204_624" WHERE "enrollment (2010-11 & 2011-12)" >= 500