You probably need to register in WUaS MediaWiki to edit
the English language
or German language
wiki WUaS universities - or to start a University or school in your own or another language, since I don't think it's possibly to edit anonymously anymore, in order to prevent vandalism.
Send an email to firstname.lastname@example.org if you have questions
Editing into the interlingual Wikidata database and related developments will happen in the next few months too.