When writing happens in every discipline, measuring it consistently is genuinely difficult. Different disciplines use different genres, value different qualities, and assess writing through different lenses. This guide covers the two main WAC assessment approaches, how to design a rubric that works across disciplines, and how to calibrate scoring across departments.
Portfolio-based assessment collects student writing across courses over time — captures development but logistically demanding at scale. Embedded assessment designates specific courses as assessment sites and evaluates writing there — more scalable, produces cleaner accreditation data, requires faculty coordination.
Build around 3-5 high-level constructs that travel across genres: purpose and audience awareness, organization and coherence, use of evidence, clarity and precision. Write performance descriptors that acknowledge disciplinary variation — "evidence appropriate to the discipline and context" rather than "use of academic sources."
Cross-disciplinary norming sessions are the gold standard but time-intensive. AI-assisted scoring calibrated to your WAC rubric can maintain consistency across genres — lab reports, case analyses, research papers — with faculty reviewing recommendations in their disciplinary context.
Entry-to-exit comparisons using the same rubric provide evidence of writing development. Start now even if the process is imperfect — three years of consistent data tells a stronger accreditation story than one comprehensive pre-visit assessment. Criterion-level findings suggest specific curricular responses.
See our guides on streamlining writing outcome assessment for accreditation and what accreditors actually want from writing assessment.