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_17429402_7 (years_of_participation VARCHAR, school VARCHAR)

### Question ###
What are the years of participation for pickerington north?

### Accurate SQL ###

SELECT years_of_participation FROM table_17429402_7 WHERE school = "Pickerington North"