Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
This paper quantifies the option value arising from sequential schooling decisions made in the presence of uncertainty and learning about academic ability. College attendance has option value since enrolled students have the option, but not obligation, to continue in school after learning their aptitude and tastes. I estimate that option value accounts for 14 percent of the total value of the opportunity to attend college for the average high school graduate and is greatest for moderate-aptitude students. Students' ability to make decisions sequentially in response to new information increases welfare and also makes educational outcomes less polarized by background. (JEL D83, I23)