After having consulted my fellow students on the Facebook OCA Photography Level 1 group, a couple of suggestions were made that I decided to follow up. Several people remarked on the sense of excitement and happiness exhibited by the subjects, and felt that this was the strongest element of the set. They suggested a) that I try close crop, as for passport photographs, and b) that I try black and white because there is so much background colour in the images.
I did both, and here is the new long list for consideration. It is interesting to see that different images stand out in this edit, and I was able to use more of the original set with a close crop.
My initial selection from this set would probably be 1,2,4,5,7,8.
No 3 does not seem to be properly smiling.
No 6 is not quite in focus at this distance.
So, the final choice comes down to this, A or B, although I still have some work to do on post production to even out the differences in light, clarity and contrast.
It is now decision time.