Purpose: This study was conducted to evaluate the effect of open laboratory self-directed practice in improving nursing skill competency. Method: This study was a one group posttest only design that examined the competency in basic nursing skills after traditional education and open laboratory self-directed practice. Students participated in traditional education and open laboratory practice through self-study. Whenever practice was done, the item of practice and time were measured and documented. Collected data were analyzed by frequency, percentages, averages and standard deviations, and Pearson correlation coefficients. Result: 1 The average number of students who participated in the open lab self-directed practice was 53.9 (64.2%) and the total number of hours of participation was 1567.5 minutes per year. Each student participated for an average of 29.1 minutes per year. 2. Analysis showed a statistically positive correlation between practical skill and open laboratory self-study (r=0.252, p=0.048).