The initial requirement of course, is to have finished a bachelor's degree. This can be completed through regular schools, distance learning schools, or online. When you have successfully completed the bachelor's degree, you can start applying for the master's degree program in the college or university of your choice. There are document requirements, which include proof of age or birth certificate, address, and previous education qualification (your diploma).
There are some schools that limit the number of their students so they set a cut-off score. This score should be achieved or exceeded by the applicant in order to qualify. There are information about the subjects and courses online that you can look through. Their qualifying exams are also done online at a specific time. Pass the examinations and you get to that school via the Internet.
You have to know that the tuition fees for the online masters degree programs are usually higher than the traditional schools. Different regions have different ways of organizing their online masters degree programs. You have to check with different schools so you can see which one could match your needs.