Link collections of countries where English is spoken as a first or an official language for students’ research projects.
Related Page: Countries (for Elementary Students)
WebEnglish.se suggests that you start with the big picture: Why English is spoken in so many different countries all over the world:
English Conquers the World | WebEnglish.se  A Theme Page about how the English language spread around the world
If the student or teacher wishes to research any other country, not included on this page, they can use the links in Any Country to find the information they are looking for.