How to make complex tables with multiple levels of headers accessible for screen readers

Is it possible to designate multiple rows and columns in a table as headers in order to make the table accessible for screen readers? What is the step-by-step process for doing so (see reference imag...

Fixing Accessibility Errors - Tables with Blank Cells

In reviewing the accessibility of Canvas assignments for courses designed by other instructors, I noticed that many teachers are using partially completed tables as a way of presenting a student assi...