The short answer is, no you may not. The education and resources offered through CG Cookie are there to help you as an artist understand and grow your skill set. Growing your skill-set so you, yourself is enabled to create unique content which contributes to your success.
Having said that, we are human and have hearts. ❤️
When in doubt, send us an email to [email protected] with your proposal and or use case. In the past we've given the green light to schools, or even commercial projects to use CGC's content.