A strategy is proposed for combining scores from multiple-choice achievement measures with performance assessments. The specific situation discussed involves the revision of a curriculum-based multiple-choice and performance assessment testing program for grades 1 through 6 for a large school district. Reading, language-arts, and mathematics achievement will be assessed at each grade level using multiple-choice tests and at least one performance assessment. Curriculum and assessments were developed locally by teacher task groups. Approximately 48,000 examinees will respond to the multiple-choice tests and complete at least one performance assessment. A scaling test composed of a sample of items from each grade will be constructed and administered to about 300 examinees at each grade level. Multiple-choice tests will be machine scored and about 20% of the performance assessments at each grade level will be scored by trained scorers. The process to develop scaled scores over grade levels and to combine the scores is described in detail. The procedure will attempt to combine common-anchor test design and scaling-test methods. (Contains 10 references.) (SLD)