Put tangible student progress and school-wide educational outcomes front and centre.  Rather than merely highlighting where students struggle, the 20-minute, automatically marked diagnostic writing test evaluates deep writing behaviours like sentence fluency, precision, and analytical depth within a secure, unassisted digital environment.

What truly distinguishes Toolbox's diagnostic testing is the Composition Skills Index (CSI), which translates comprehensive, objective data into actionable intervention strategies.  Explicitly guide educators on exactly what to do when intervention is needed.  Comparing student performance against expected year levels and providing clear cohort-wide tracking, the CSI equips school leaders to measure longitudinal value-add, accurately evaluate the success of teaching strategies, and ultimately drive meaningful, evidence-backed improvements in student writing capability.

The New Zealand Education Review Office (ERO) initiated a report in 2019 to investigate the writing capabilities of New Zealand students.  They found that only six New Zealand schools had shown sustained, accelerated learning in student writing.

The best among those—Northcross Intermediate School on Auckland’s North Shore—had adopted Writer's Toolbox three years prior to turn around their student writing results.

According to leading educational expert Professor John Hattie, evidence of student progress is demonstrated when a child has an effect size of 0.4 over 12 months.  Impressively, the effect size of Northcross students increased from 0.4 to 0.8.  And by the end of 2018, some students had more than tripled their expected effect size (effect size of 1.34).