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About the AEM Center

The National Center on Accessible Educational Materials for Learning at CAST provides technical assistance, coaching, and resources to increase the availability and use of accessible educational materials and technologies for learners with disabilities across the lifespan.

Learn more about the AEM Center

Why accessible materials & technologies?

Accessible versions of educational materials may mean the difference between learning barriers and learning opportunities.

Learn more about providing access to learning


NIMAS is a technical standard used by publishers to prepare “electronic files” that are used to convert instructional materials into accessible formats. NIMAC is a national center that stores NIMAS source files from publishers.

Learn more about NIMAS & NIMAC

Photo of Joy Smiley Zabala

Celebrating Joy

The Joy Zabala Fellowship in Assistive Technology & Accessible Educational Materials will support early career professionals in assistive technology and accessible materials. At CAST from 2007–2021, Joy was internationally known and beloved for her leadership and advocacy for learners with disabilities and their families.

Learn more & donate today

Upcoming AEM Center Events

Learn more about AEM Center events

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Advancing K-12 OER Through a Collaborative Model

The session will feature a panel with members of K-12 Voices for Open, including district, state, and organizational leaders in open education to discuss pressing issues for the K-12 open education environment.

5:00PM – 5:55PM ET on Monday, October 18, 2021

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Leading and Teaching with Empathy: Leveraging Technology, Accessibility for All

Universal Design for Learning (UDL) will be demonstrated to guide implementing accessibility. Tools teachers can use to immediately begin applying accessibility in the creation of their own digital content will be demonstrated and practiced. Participants will engage in hands-on experiences using web based accessibility tools.

1:30PM – 3:30PM ET on Tuesday, January 25, 2022

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You Can Make an EPUB: Easy Tools to Get You Started

Want to learn how to improve the readability and usability of your materials? Join us to learn how to create accessible content with EPUB. Other tools for making accessible epub will be explored. Make your materials more inclusive for everyone!

2:15PM – 3:15PM ET on Thursday, January 27, 2022

Featured AEM Center Resources

Learn more about AEM Center resources


Fair Use and Accessibility for Persons with Disabilities

This brief presents an overview of the “fair use” doctrine under copyright law in relation to the provision of accessible texts to persons with disabilities.

J. Karger


Open Education Resources: Ensuring Inclusive Learning in Uncertain Times

Situated at the intersection of where the OER field meets accessibility issues, this guide details a variety of resources useful for evaluating and selecting appropriate and accessible OERs.

A. Hashey, et al.


AEM Navigator

Use the AEM Navigator to make informed, accurate decisions about the acquisition of accessible formats for students who need them.

AEM Center at CAST

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