At my high school, it is a tradition for seniors to take part in the flashmob. The dance changes every year and the participants are all from grade 12 ( Senior Year). The flashmob often occurs in the last week of school, before the 12th-graders are off to revise for their University Examinations.
This is this year’s flashmob (I would have been in this if I had stayed at home :D)
And this is the first year’s flashmob. I think this one is the best one so far. You can see the music went off in the middle of the clip because the principal did not allowed them to do it that year. However, it has now became a tradition somehow.