2004 -Basic Skills and the Earnings of Dropouts. Economics of Education Review 23:3 (2004), 221-35. (Working paper version pdf.)
2004 -Does the GED Improve Earnings? Estimates from a Sample of Both Successful and Unsuccessful GED Candidates.Industrial and Labor Relations Review 57:4 (2004), 579-98. (Working paper version pdf.)
2004 -The Devil’s in the Details: Evidence from the GED on the Large Effects of Small Differences in High Stakes Exams . Economics of Education Review 23:4 (2004), 336-49. With Richard J. Murnane and John B. Willett. (Working paper version pdf.)
2003 -Who Benefits from a GED? Evidence for Females From High School and Beyond. Economics of Education Review 22:3 (2003), 237-247. With Richard J. Murnane and John B. Willett. (Working paper version pdf.)
2003 -The Economic Benefits of the GED: Lessons from Recent Research. Review of Educational Research 73:3 (2003), 369-403. (Working paper version pdf.)