The first BB class I attended was Arts & Crafts, on a Friday Evening after Drill Parade, it was great fun as well as being informative - I did oil painting and photography, amongst other things, no exam but a certificate was awarded after each year of attendance, 3 certificates and you got the badge, I did a 4th year and got the advanced level (red felt disc behind the badge).
Peg.
P.S Many years later, whilst operating as a professional photographer, I was appointed Examiner for the Sutton Coldfield District Brownie Photoraphy Badge - Impressed? I thought you would be!