Art Teacher 'on the run'

When a phone call comes in and the other end is a principal talking about a need for art teacher, it is so difficult to reject the urgent request. Yet, this is against my retirement plan to focus on my painting.
Then again, it is no joke nowadays when discussing about coursework (a whole-year art project) for the graduating students. Most of these students are not prepared to face the high expectation of the new syllabus. Also, there are so many constraint for the art teachers to expose them to the full package of perceiving, communicating and appreciating. Alas, there are high possibility that an adjunct flexi art teacher is needed at any time of the year. So strange yet very real. I become that kind of teacher on the run. Term-by-term or even term-after-term.
There is no ending and I'm going to miss my own creation.