In "Teacher Salary Bonuses in North Carolina"--a paper presented at the February 2008 National Center on Performance Incentives research to policy conference--Jacob Vigdor of Duke University reviews a teacher salary bonus program operating in North Carolina. Known officially as the ABC's of Public Education, the program awards teachers with bonuses up to $1,500 for schoolwide student test score gains. He discusses whether North Carolina's bonus program has improved student performance and/or lowered socioeconomic and racial achievement gaps in its public schools. Vigdor finds that the program appears to have a positive impact on students' scores on the high-stakes tests used to determine schools' bonus award eligibility, but there is no evidence of a program impact on low-stakes test scores. [This research brief describes work published by the National Center on Performance Incentives in "Teacher Salary Bonuses in North Carolina" by Jacob L. Vigdor, Working Paper 2008-03.]