Who are the top five ballet schools in greater Sydney area for age older than 15?

Who are the top five ballet schools/studios in greater Sydney area for students older than 15? Are there any ballet competition in NSW and what are their name?

Who are the top five ballet schools in greater Sydney area for age older than 15?symphony

Here are some ballet classes in NSW:

http://www.allstarz.com.au/

http://www.actsingdance.com.au/component...

centrestagestaracademy@hotmail.com (PO BOX A565, SYDNEY SOUTH NSW 1235 )