I have a Ph.D. in Mathematics, lecture at MUT University, and teach at a math center in Isfahan, Iran, where the participants are sharp high school students.
My first edX course was Quantum Mechanics and Quantum Computing. After that great course, I continued to study this topic and am now teaching this subject to some of my undergraduate students. I am grateful to edX and Professor Vazirani, since they helped me take my first steps in this field. All of my students can study this topic because edX has shared this knowledge and science.
I have since taken the course Combinatorial Mathematics from Professor Yuchun Ma teaches at TsinghuaX.
I received my certificate and was one of top students in this course. Also, since Iran was limited by sanction rules, the edX team went above and beyond to deliver my certificate to me in a legal manner. After going through the legal process, I received my certificate and I am very thankful for their help.
Taking edX courses was great. The materials for each courses, proper timing, the evaluation process, the design of sites and discussion sessions and etc, all are very nice.
I now use edX to teach my students. I advise all of my students in the university to take courses from edX such as Linear Algebra and Combinatorics. I use some materials of courses that I passed in edX to teach my students. Naturally, I point out that these materials are from edX and its partners and professors. I also use edX course videos in class. If a student takes an edX course, I will then give them more advanced materials, for better progress in their learning.
I absolutely plan on taking additional edX courses. There are many interesting courses in edX that I will take it in the future, such as Introduction to Linux. I will try to manage my time in such a way that I can take more courses. I am very busy, but in the middle of my all works, I still take edX courses. Why? The answer is easy: edX teaches me many new things, and prepares an effective environment to work with other great professors and people.