This study assesses the effectiveness of a quality-improvement (QI) package designed to enable small-scale commercial reproductive health (RH) service providers to improve the services they offer. The study was conducted among midwives who are members of the Uganda Private Midwives Association. A pretest-post-test quasi-experimental panel study design was used wherein midwife clinics were allocated to two experimental groups and one control group. Baseline and follow-up measurements of structural and process attributes of quality were taken at the clinics by means of a facility inventory, interviews with midwives, and observations of client-provider interactions. Nearly 70 percent of the midwives who were trained to use the package reported that it was easy to use. Among clinics in which midwives received training in the use of the self-assessment tool and in developing action plans, structural and process attributes of quality improved only among those clinics in which the midwives' supervisors received training in finding solutions to the problems identified through self-assessments. The QI package may be implemented with small-scale private providers of RH services who are part of a professional association, network, or franchise that supervises their performance.