This paper describes and evaluates a comprehensive school and instructional management system developed and implemented in one of the nation's largest and fastest growing school districts. Since implementing the system, standardized achievement scores have increased an average 20 percentile points. The system has components to: (1) clearly set forth objectives; (2) measure current achievement of each objective; and (3) reduce the difference between what is and what should be. Objectives provided for by the system range from specific math skills for kindergarten to goals for individual schools and performance objectives for individual staff members. The means of measurement and evaluation include standardized tests, custom criterion-referenced tests, standards and instruments for observing, and measures of feedback regarding what is, compared to what should be. (Author/PN)