According to the National Center for Universal Design for Learning (2017), UNIVERSAL DESIGN FOR LEARNING (UDL) means a scientifically valid framework for guiding educational practice that:

(A) provides flexibility in the ways information is presented, in the ways students respond or demonstrate knowledge and skills, and in the ways students are engaged; and
(B) reduces barriers in instruction, provides appropriate accommodations, supports, and  challenges, and maintains high achievement expectations for all students, including students with disabilities and students who are limited English proficient.