Welcome Jane, I had to look up what year 12 was
Back in my youth I was asked to teach ptography to 13/14 years old, by modern definitions I was year 12 in age range
althogh that was also the year I took my A levels.
It was fun as there's something magic about the darkroom experience, I'd started ata school much younger and even today that magic remains 50+ years later . . . . . . . . . .
Keep up the good work and maybe some of the equipment being offered free here could go your way.
Ian