Things that don''t go here include: teachers'' or professors'' personal sites (primary and secondary teachers have a category at K through 12 Personal and Class Pages, college and university teachers please submit to the appropriate category for the subject you teach), and anything that is not in English.
Some of the larger constituencies have their own subcategories, e.g., K through 12 and Higher Education. So please, if your site is about only higher education, or only primary and secondary education, submit it in the subcategory.