The purpose of this study was to determine the effects of an education program for regulating hypertension on blood pressure, self-care and self-efficacy in patients with hypertension. The study design was a nonequivalent control group pre-post design. Data were collected from March 12 to June 19, 2001. Sixty-eight participants were included, 41 in the experimental group and 27 in the control group. The collected data were analyzed using the chi-square test and t-test with the SPSS WIN program. The experimental group had lower levels of systolic and diastolic blood pressure compared to the control group. Physiological parameters were not significantly different for the two groups. The experimental group had higher mean self-care score and higher mean self-efficacy score than the control group. In conclusion, the study found that an education program for regulating hypertension decreases blood pressure and increases self-care and self-efficacy. Further study with a longitudinal design is suggested to verify the effects of this type of education program and to standardize the education program.