Super-curricular activity - 日本舞踊 - Traditional Japanese Dance

Yesterday afternoon, my wife and I took an excursion to the National Theater of Japan to see one of my fourth grade students participate in a Nihon Buyo recital. I was impressed by the quality of the production and enjoyed it very much.

Not my student. There was no photography allowed in the theater.

I was reminded how much there is to learn and do outside of school and inspired to motivate my students (as well as myself) to get more involved in extra-curricular activities.

Or, instead of 'extra-curricular', how about 'super-curricular'?