Nobody is in charge in this classroom, and the speaker seems to be the only one who has noticed. The subtitle, "Unsupervised lesson", sits above the poem like a label on a specimen jar. What follows is seventeen lines of chaos observed from the middle of it. The central idea is simple and a little alarming: take away the adult, and order collapses almost at once. The one sensible person in the room can do nothing except dodge, fall over and think about leaving.
The form is built to feel like the experience. There is no rhyme, no regular metre and no stanza break, so nothing is allowed to settle. Many lines have no verb at all: "Noise, broken furniture, glass-shards" and "Footsteps in the distance" read like jotted notes, or a camera panning across a room. Everything is in the present tense, so the reader is in the lesson with no time to reflect. Punctuation is almost absent, which keeps the lines running into each other. The few marks that do appear stand out. The "!?" in "Where is your teacher!?" is the only raised voice in the poem's own narration. The single semicolon in "Door closes; riot returns" works as a hinge, swinging the poem back to where it began.
That loop is the poem's real structure: chaos, a warning of footsteps, an intrusion, a pause, a question, an answer, and then chaos again, worse than before. The pause is tiny. "Quiet fills the room" is answered near the end by "Yelled obscenities fill the room", the same verb in the same position. The room is always full of something, and it is never order.
The word choices are sharp. "Hostages to trade for stolen rubbers" turns bags and pencil cases into prisoners and treats the theft of an eraser as a diplomatic crisis. The stakes are tiny but the game is played with total seriousness, which is funny. It also suggests that when adults leave, pupils invent their own rules and economy. Then there are the "guiltily honest faces". The class has shrunk to a row of expressions, and the phrase holds two things at once. They are guilty of the mess and honest in their answer. The honest answer, "Photocopying papers, miss", is the most damning sentence in the poem, because it points at the absent teacher more than at the children. The visiting teacher gets her answer and the door closes. She is a gust of weather, and nothing changes.
The strangest line is "Thank God we're on the fourth floor", which follows a girl jumping out of the window. A fourth-floor drop is hardly a comfort, so the logic doesn't quite work. The line might be a dark joke, or the muddled relief of someone in shock, or a sign that the speaker has lost all sense of proportion. In any of these readings it shows a mind scrambling for something to be grateful for.
The speaker is almost entirely passive. A missile "barely miss[es] my head", and "I'm knocked over by a flying body". The word "body", rather than "boy" or "girl", strips the person of identity, as if the classmates have become objects thrown by the storm. The final line, "I should really get out of here", is the quietest in the poem. "Should" and "really" belong to someone politely leaving a dull party, not escaping a near-riot, and that gap between tone and situation is the poem's main comic engine. It is also unsettling. The poem ends on an intention, not an action, and the speaker is still in the room.
The poem makes no grand claim, and its significance lies in how accurately it catches a recognisable situation. It doesn't lecture. It never says who is to blame, whether the pupils, the teacher with the photocopies, or a system that leaves a room unwatched, and it trusts the reader to decide. For students, it also shows how free verse can get its effects from timing, omission and tone rather than ornament. The panic is told in the voice of a shrug, and that is why it sticks.