A Reimagined Progress Report

This view is a reimagining of the traditional progress report. Instead of showing progress as a single score or category, it uses estimated scale score ranges to forecast each student's likelihood of reaching proficiency, giving teachers actionable insight into which students are on track and which may need additional support before the summative assessment.

Understanding Pace & Trajectory

Pace reflects testlet mastery: how much content a student has mastered so far, like a speedometer showing current speed. Students already at high pace have mastered most content and have limited room to go faster.
Trajectory reflects ability change over time: whether a student's measured ability is increasing, steady, or decreasing. A rising trajectory means the student is accelerating their learning. Together, these two dimensions give a fuller picture. A student at high pace but flat trajectory is maintaining strong performance, while a student at lower pace but rising trajectory is catching up.

How Growth v2 Works

This report uses a split-minimum approach to the Mastery Growth Index. Rather than requiring a single minimum number of testlets for the full MGI, each component activates independently: content mastery (Pace) begins contributing to MGI once a student completes their 3rd testlet, while ability growth (Trajectory) begins contributing once the 6th testlet is completed. Before each threshold, that component is treated as zero. This gives earlier, partial growth signals — teachers can see mastery trends by testlet 3 without waiting for enough data to measure ability change.

Current formula: MGI = 50% × Ability Growth + 50% × Mastery Rate (Mastered / 12)

About the MGI Explorer

This tool lets you explore how the two components of the Mastery Growth Index (ability growth and content mastery) interact. Use the weight slider to adjust how much each component contributes to MGI. Changes made here apply across all tabs: adjusting the weighting will recalculate MGI scores, shift the diagonal category boundaries, and update every chart and table in the report.

Reading the Triangle

This chart combines two perspectives: the x-axis shows each student's Mastery Growth Index (combining testlet mastery pace and ability trajectory), while the y-axis shows how far they are from the proficiency cut score. Students in the upper-right are above proficiency and growing — on track. Students in the lower-left are below proficiency with negative or limited growth — these students need the most urgent support. The triangle shape reflects the natural constraint: students far above proficiency with strong growth are rare because there is less room to grow at the top.