Open Source Software connects users from all over the world. The more educational software that is released under an Open Source license that can be shared with others, the more impact it can make globally. This is especially true with educational tools and those that are translated to other languages for others to use. A perfect example of this is in Kerala, India.
GCompris is a very feature-packed Open Source educational platform with many types of learning activities for kids of all ages.
They have been using, promoting and teaching Open Source tools for 30+ years!
Check out their list of programs they've been using for students ranging from 5-18 year olds. http://timotheegiet.com/blog/floss/tales-of-the-kde-network-kerala.html
Cover image of Kerala: CC BY-SA 4.0 File:Sunrise at Munnar,Kerala.jpg