CPORT conducts statewide quality service regional reviews in each of the 12 Department of Children’s Services (DCS) regions. CPORT statisticians pull a stratified random sample of children in state custody and those who are at risk of custody, based on age, race, gender, and adjudication. The sample is designed to be statistically significant with a statewide validity of 99 percent level of confidence, with a +/- 10 percent margin of error, and a regional validity of 85 percent level of confidence, with a +/- 15 percent margin of error. Proven research methods are rigorously applied to assure a high degree of reliability in each review. The findings and results from the process are used in program management and policy planning.