Thanks for reaching out. Certificates will likely be available by mid-November. An email will be sent out to coordinators when standard certificates can be downloaded and any gold/platinum certificates and medals have been mailed out.
You can check which students (if any) have earned special awards by following the steps outlined here:
Schools are responsible for printing Challenge completion certificates for the remaining students.
Let us know if there's anything else we can do to help in the meantime!