There is an annual event happening this week - it is the Draconids Meteor Shower. It is set to run October 6 - 10 with a peak on the 7th. The meteor shower produces about 10 meteors per hour so be patient if you go see it or have your students go view it.
The Draconids is an unusual shower in that the best viewing is in the early evening instead of early morning like most other showers. Remember to move away from city lights!
Read more about it here: http://www.seasky.org/astronomy/astronomy-calendar-current.html