Mismatch of expectations. I would say all of us experience it, although some of us are much less affected by it than others. We are sold the idea of fulfillment and satisfaction through teaching, which is a misrepresentation of where most of our day to day job satisfaction normally comes from. Actual T&L of academic subjects is just the tip. Below that, most of our work revolves around getting our students ready to learn. This means taking care of their multitude of non-acad related needs, and also running the school in an operational sense. Sure we have allied educators and EAS colleagues to help us with some of these, but ultimately most student-facing and stakeholder-facing non-teaching work is still done by EOs.

If one thinks such work is unnecessary or degrades job satisfaction, one should consider being a private tutor whose job is almost 100% to teach. With an NIE certification, it is easier to compete in the market and command higher fees. Teaching is a skill that every MOE teacher needs to master, but ironically (or not?) teaching of acad subjects is not the thing that takes up most of the MOE teacher's mental/physical bandwidth and working hours.