Hello Alexandra!!! Really nice to here from you! I am honored! I also believe that my project could contribute a lot on a large scale! We already have some small data about customer validation and YES, we have our platform (more like a MVP) running: www.prevestibular.org (it is in Portuguese because we are from Brazil! ) We have started publishing and sharing facebook posts with more emphasis last week and so far we have already more than 300 people all over Brazil that want to volunteer as a teacher at some community preparatory schools within the COUNTRY! Also, we have more that 100 community preparatory schools already registered in our website!