The UDL framework values diversity through proactive design of an inclusive curriculum, thereby eliminating or reducing barriers to academic success. Initially proposed as a means for including students with disabilities in the general-education classroom, it is now better understood as a general-education initiative that improves outcomes for all learners.

>UDL addresses the three learning networks within a broadly defined concept of curriculum that includes goals, materials, methods, and assessment (Hitchcock et al., 2005). According to the following three UDL principles, each area of the curriculum should provide multiple, varied, and flexible options for representation, expression, and engagement:

The four interrelated components of the UDL curriculum require further explanation.

The purpose of UDL implementation is to create expert learners — learners who can assess their own learning needs, monitor their own progress, and regulate and sustain their interest, effort, and persistence during a learning task. Many students learn within traditional classrooms with a traditional curriculum. However, most need supports and/or scaffolds to become expert learners.