how will the so-called teachers be selected? how can we be sure that they are competent in a particular matter. will you check them somehow?
In the first phase, we will only publish content from the educational institutions and MOOCs. Later on, the platform will be opened up to anyone to publish their learning material. At this stage, there will be already a critical mass of users who will be giving constant feedback scores on the content. At the same time, if lecturers will be selling their content on the platform, they will be financially incentivized to ensure a proper quality of their material, since they will be payed by number of uses of their material.
These two mechanisms will greatly contribute to weeding out irrelevant material or material of poor quality.