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_21682 ( "School" text, "Years of Participation" text, "OCC Championships" real, "Last OCC Championship" text, "Last Outright OCC Championship" text )

### Question ###
How many schools won their last occ championship in 2006?

### Accurate SQL ###

SELECT COUNT("School") FROM table_21682 WHERE "Last OCC Championship" = '2006'