Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_21514460_1 ( headquarters VARCHAR, school_district VARCHAR )

### Question ###
Where is the headquarter located for the Annapolis Valley Regional School Board?

### Accurate SQL ###

SELECT headquarters FROM table_21514460_1 WHERE school_district = "Annapolis Valley Regional School Board"