If you are interested in bringing Penn physicists or astronomers to your classroom or community center, contact PhysicsOutreach@sas.upenn.edu.
Other resources and events for teachers include NSF-RET and Quarknet:
NSF-RET
RET is a program for high-school teachers sponsored by the National Science Foundation (NSF) and organized at Penn by the Laboratory on the Research of the Structure of Matter (LRSM).
Learn more about NSF-RET here.
Quarknet
QuarkNet is a six-week+ program for four local high-school students and one local high-school teacher/mentor to work with the High Energy Physics experimental group to build and use particle detectors. The program is very hands-on with lots of electronics, detectors, software and firmware.
Information on the Penn program plus application information is available here.
Information on the program at the national level plus interesting background material on particle physics is available at: http://quarknet.fnal.gov/