CEOE Principal Comprehensive Assessment (144) Diagnostic Test

A school's vision calls for students to defend mathematical claims on unfamiliar problems. In a cohort of 100 students, 75 select a valid strategy, 65 justify their reasoning adequately, and 50 do both on the same task. During the previous cycle, the mean rubric score rose mainly because students improved their stronger component; the proportion meeting the complete standard changed little. Some teachers favor concentrating on justification, while others want a growth target that recognizes progress below proficiency. The team must select one primary outcome for a ten-week cycle, using a comparable task with the same cohort. It judges the proposed targets feasible with available support. Which goal would best establish progress toward the vision?