I can see why they are including the rock and roll, In fact most of the pros will have done rock and roll exams, as it is part if the exam system, of rossetes (ballroom, latin, old time , rock and roll and discos) Most children learning will be learning the above dances, My son (6) is working on his disc exam at the mo, but has done all the above in the past. At disco competions, they do rock and roll partner dances, and having seen them learn it, it is a similar start to Jive and I think thats why they learn it at a young age. Just my opinon.
I would love to see some of the old time dances done, these are my sons favorites like the gainsbrough glide. (they would be great for a xmas special as they have moves that look like skating in them)
Liz