I teach from home for a school in Japan. I am a contract worker, not an employee. What industry code should I use?

This is the link to the NAICS for Canada 2022  https://www23.statcan.gc.ca/imdb/p3VD.pl?Function=getVD&TVD=1369825  with the list of codes pertaining to different industries.  The closest Industry code for Educational services as per this list is 611000 (Educational Expenses)  or 611600 (other Educational Services)