You are UNDER qualified for that work. Your understanding and application of grammar and your understanding of teaching methodology is no way near good enough to teach a language from the ground up! Not that you're qualified for advanced grammar teaching either, as proved on many occasions (before your tantrum and post deletions) with your dreadful awareness of advance grammar rules and vocabulary definitions!

And to consider any teaching of any students to be "inferior" just shows your complete and utter unsuitability to be an educator.