Seasoned teachers will tell you that achieving 100% attainment for any one question — even MCQs — is Mission Impossible. Climbing Mount Everest is easier in comparison. Why, I speak from experience. I have climbed its summit before.

Imagine my growing pride when I marked the question on what the source of energy is. At first surprised, I found myself marking “the Sun” correctly and furiously, amazed that no one had broken my winning streak.

In the end, 21 out of 22 students got this question right. I basked in the pride of a job well done. Apparently, my 3Ss — Sun, source, sugar — had worked like a charm.