The school or the club? I'll do a bit of both just to save time.

The club I imagine would host meetings reasonably frequently (so it's actually an obligation and not just something Hana attends once a month and forgets about). I can see them arranging local field trips and taking on event photography duties around the community and school. They'd also have a bi-annual display/presentation/gallery thing and a themed monthly photocontest. I stole those last two from my high school.

The school might need to get talked about between the three of us since it's a shared setting. In general I'm imagining something a bit like Gotham Academy.