Look for barriers in the lesson, not fixed learner types

CAST’s UDL Guidelines 3.0 invite educators to design options for engagement, representation, and action and expression in support of learner agency. This is not a claim that students belong to fixed “visual” or “auditory” learning styles, or that a lesson should target a particular brain region. Choose options in response to the goal and barriers learners may face (CAST Guidelines 3.0).

A hypothetical lesson and a common assessment

In a climate unit, all students can work toward the same goal and evidence while accessing the core text in print or with accessible audio. They may present learning as an essay, oral explanation, or concept map, but each format is assessed against the same criterion: explain, with evidence, how a change in greenhouse-gas concentration affects energy flows. If writing itself is the goal, provide writing support and check that an alternative format does not bypass that target. This is a design example, not a reported classroom trial.

Before teaching, identify barriers in vocabulary, material formats, and submission methods. Afterward, check who could access the work and demonstrate the objective. More choices do not automatically improve learning; remove needless complexity and adjust based on learner feedback and results.

Evidence and limits

CAST’s 2024 Guidelines 3.0 offer options across engagement, representation, and action and expression as a planning framework. Capp’s meta-analysis examined 18 empirical pre/post studies published from 2013 to 2016. Its abstract reports improvement in the learning process but says effects on educational outcomes had not been demonstrated (publisher abstract). The evidence set is limited, so UDL should not be presented as a universal remedy or a guarantee of equal outcomes.

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