This study reviews and synthesizes research on factors that are correlated with school effectiveness. Effectiveness may be determined by high achievement on standardized tests; low rates of violence, vandalism, delinquency, and behavior problems; and high attendence. Indicators of effectiveness encompass two levels, classroom and school. Schools that are effective spend more time on task and have a principal who supports an academic focus. Research indicates that a school's social processes (consensus building, modeling, and feedback) determine whether a school will perform above expectations. When students perceived the results of faculty-administration consensus on academics and discipline to be fair, firm, and consistent, school outcomes were better than expected. The dominant model in the school is the principal, his or her behavior will influence students. Consistent feedback which recognizes and supports success is also a significant factor in school effectiveness. The findings further suggest that two fundamental beliefs are correlated with student achievement: student belief that their actions will affect their future, and teacher belief that each child can succeed. (Author/JK)