That sounds like a great and worthwhile project you're working on, I'm excited to see the results.
However, my cynical side tells me that critical thinking will never be taught in schools - the last thing governments want is a populace who can think critically. Schools exist to produce obedient slaves that can generate more wealth for a few people and maintain society so it doesn't completely crumble (e.g. doctors, police etc), nothing more. Schools in no way exist to provide real education and real learning - that is always up to each individual to provide to themselves.
The most important and valuable things I ever learned, I learned on my own time and efforts. Schools only ever taught me how to pass exams.