Schools are the most important target for Free Software Advocacy
3Software freedom is important, and schools if they impose proprietary software on the people, are fighting against it. This is not only an assault on the freedom and solidarity of the people but is a violation of the spirit of education. Proprietary software is in opposition to everything that the ideal of school stands for. Schools using proprietary software is evil, this perverse practise needs to end. Shools must use Free/Libre software exclusively.
Free/Libre Software is software that respects the user's freedom. Software that meets the "four essential freedoms" is considered Free/Libre. The Free Software Movement was started by Richard Stallman to to pursue the Liberation of Cyberspace, to create a free digital world for computers users.
Richard Stallman started the GNU project to develop an operating system for this, and pioneered the concept of copyleft with their GNU GPL license. Copyleft is a specific kind of a Free/Libre license among many, that guarantees that the user's freedom is preserved when the software exchanges hands. The four freedoms of software are: (0) to run the program, (1) to study and change the program in source code form, (2) to redistribute exact copies, and (3) to distribute modified versions.
Visit GNU.org for more https://www.gnu.org/