|School|Team Name|Town|County|Enrollment (2010-11 & 2011–12)|Primary MSHSAA class*|Football class|
|---|---|---|---|---|---|---|
|Benton High School|(Lady) Cardinals|St. Joseph|Buchanan|846|4|4|
|Bishop LeBlond High School|(Lady) Golden Eagles|St. Joseph|Buchanan|314|3|2|
|Cameron High School|(Lady) Dragons|Cameron|Clinton|503|3|3|
|Chillicothe High School (Missouri)|(Lady) Hornets|Chillicothe|Livingston|638|4|3|
|Lafayette High School|Fighting Irish|St. Joseph|Buchanan|801|4|4|
|Maryville High School|(Lady) Spoofhounds|Maryville|Nodaway|473|3|2|
|Savannah High School|(Lady) Savages|Savannah|Andrew|743|4|4|
|Smithville High School|(Lady) Warriors|Smithville|Clay|727|4|4|

Question: how many of the schools had at least 500 students enrolled in the 2010-2011 and 2011-2012 season?
Answer: 6