Chromebooks are lightweight and cheap laptop replacements that are very popular purchases for school districts.
Chromebooks typically come with ChromeOS, an operating system that is basically just a browser :(
Once a school is taken over by Chromebooks and ChromeOS, teachers and students use lesson plans catered to the Google infrastructure, websites, and cloud based services and do not use offline programs.
GalliumOS is an alternative to ChromeOS that can be installed on most Chromebooks that allows for offline program usage, programming, and more advanced options that are not limited to a web browser.