The authors appreciate the participation by the BIO 100 students. We thank Mary Tyler, Karen Pelletreau, and Natasha Speer for helpful feedback on the manuscript. We also thank Erin Vinson for assistance coding student surveys. Thank you to Ryan Cowan, Ron Kozlowski, and the rest of the Synapse staff for assembling data for this analysis. This work is supported by National Science Foundation grant 0962805.