It is important to create documents in Microsoft Word that meet accessibility standards. NCDAE, the National Center on Disability and Access to Education, has created guidelines and instructions for meeting those standards.
A PDF file related specifically to Microsoft Word 2016 is attached in the Files area of this knowledge article, which is on the lower right if on a desktop or laptop computer.
Additionally, this site links to resources on creating accessible documents in Word as well as other popular applications.