<https://blog.gradely.co/help-article/how-to-add-teachers-to-your-school-account-on-gradely/#authorImage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://blog.gradely.co/help-article/how-to-add-teachers-to-your-school-account-on-gradely/>