The Connecticut Mastery Test is a critical element of the state's efforts to attain educational equity and excellence. The testing program assesses essential skills in mathematics and language arts, including listening, reading, and writing for grades 4, 6, and 8. Student achievement is measured and reported in relation to specific learning objectives (criterion-referenced) that students can reasonably be expected to have mastered by the end of grades 3, 5, and 7. This report provides an overview and summary of the implementation of the grade-6 Connecticut mastery test. In 1991, sixth graders mastered an average 24.7 of the 36 mathematics objectives tested, a slight increase above 1990, and 84.2 percent scored at or above the remedial standard. In language arts, sixth graders mastered an average of 8.1 of 11 objectives tested, representing no change from last year. There were slight improvements in the writing scores, the number of students scoring above the remedial standard in writing, and the number of students scoring above the writing goal. Reading achievement on the Degrees of Reading Power (an average of 57 units) was unchanged from 1990. A comparison of results from 1986 through 1991 is provided. Fourteen charts present test results and comparisons. Twelve appendixes provide supplemental information about testing and scoring. (SLD)