In most American universities, a four year chemistry program consists of 1 year of general chemistry, then 1 year of organic chemistry, then 1 year of physical chemistry, then 1 year of some elective (inorganic chemistry often, but sometimes an advanced form of one of the other courses). There are also usually some lab courses built into the curriculum. There are also options often for advanced placement (skipping general chemistry, say). In my limited experience, what is taught in each of these classes is pretty conserved.
Just for kicks I checked out my organic chemistry textbook (Solomons 6th Ed) to see what coverage of molecular orbital theory is provided. The first chapter does have a few sections (spanning about 4 pages) on quantum mechanics, atomic orbitals, and molecular orbitals - the section on molecular orbitals is 11 paragraphs, about half of which deal with the hydrogen molecule, and none of which address applications to carbon-based molecules (there is a brief 1 page interlude into MO theory later in the book when discussing the electronic structure of benzene). The introductory section on hybridization, immediately following, is 4 pages by itself. The first section covers (topically enough) methane. Hybridization is presented as an excellent model of methane, and nowhere are weaknesses of the hybridization model addressed, not with respect to methane specifically or to organic molecules in general. Were I a student being introduced to organic chemistry for the first time, my take away from reading chapter 1 is that hybridization is a perfect theoretical model of the structure of organic compounds, and I would certainly have no inkling of any weaknesses in the model or any idea that molecular orbital theory or other models are in better agreement with experimental data in many cases.
Anyway, I didn't mean to make a crusade out of this. I just think chemistry professors need to do a better job of explaining the limitations of chemical theories to their students. I know if you start going too much into exceptions to rules, you can end up confusing people who are new to the subject area, but on the other hand students should at least be aware that limitations exist. Otherwise, you end up with students who think they're doing something wrong with they encounter a case where the simple model they learned about fails.