Threshold Learning Center - Zearing, Iowa
Continuing Education Courses

Threshold Learning Center Science and Professional Development Workshop

Obtain college credit in Astronomy, Geology, and Ecology while discovering the excitement of residential outdoor education as a resource for your students.  If you would like to learn more about our Outdoor Science and Residential Education Development Workshops, please email us at  We can do in-service workshops or overnight retreats for you and your staff.  For an example of how our overnight programs look, click on the following link:

Science and Professional Development Workshop 2005
Program Information and Registration Form