Nettle's poem captures a single exam from the point of view of a student who seems oddly calm. The opening, "Too late; we all sit," suggests there's no turning back now. The teacher is a stern presence, "glaring daggers" twice, once before the tests are handed out and once after. The repetition makes the scolding feel like part of the routine.
While everyone else gets to work, the speaker stares out the window, "silently amused," watching a leaf drift to the ground. That small, quiet moment sets them apart from the pressure around them. Inside, pens "race" and "scratch," and the room that is usually noisy with riot has gone silent.
The ending turns the papers into living things that "rattle and shiver" under "the weight of words" before being collected. The mood is tense but also wry: the speaker seems to see the whole ritual from a slight distance, as if it's both serious and a little absurd.