A Lot of Uncritical Thinking

It always intrigues me when an idea I've been holding on to gets broken down.
Looking back on my schooling I find that much of the learning both in high school and college have had weak hints of critical thinking. For example it's only been in the last year that I've been exposed to logical fallacies. I would think that this would be an important element of thought itself, like knowing that two plus two does not equal five or whatever else out there. It equals four, we can be clear about that. I think that critical thinking should not only be taught once but it should be taught through repetition. Physical exercise is not done once, teeth are not brushed only once (in most cases). Intuitive and emotional awareness is also absent in almost all curriculums that I've been exposed to in all the state sponsored institutions of higher learning.