It may depend on the organization hosting the event near you. It's a paper-based contest so somebody has to organize it and host it and your student has to show up in person. The local organization we enrolled through offers after-school math classes at some local elementary schools, and also after-school and weekend math classes at the community center. But we did not have to be enrolled in their classes to register for the contest through them. I just signed up on the local program's website, plunked down my $25 (or whatever it was), and made sure DD showed up at the right place at the appointed time. She was considered a member of their "team" by virtue of having signed up through their school.
Yeah, I think you sniped the last ticket in - I couldn't sign my daughter up. It's on my calendar to do it when registration opens in October.
