Request to use "Four Principles" text for educational purpose

[Christine Freeman]

Hi,
I’m designing an online course in user experience as my master’s  
project for an MS, Education, Option in Online Teaching and Learning  
at California State University East Bay.
I’d like to use the text that defines each of the four principles of  
accessibility, as given on http://www.w3.org/TR/UNDERSTANDING-WCAG20/intro.html#introduction-fourprincs-head

What’s involved in getting permission to use this material for  
educational purposes?

Thanks,
Christine Freeman