30 min
One coach on the rope, the other half bouldering, and a job for everybody in between
Equipment: Belay device and locking carabiner per rope
Pick one objective from the week and name it before anybody ties in. On the rope, that is what you are watching for. Everything else can wait.
Half the class on the rope, half bouldering, and swap at the midpoint. A coach belays every climber at this age, so keeping everyone engaged can be difficult.
Give the four participants who aren't climbing the same skill from the ground: call the next hold for the climber, count the quiet foot placements out loud, or say static or dynamic after each move. They are not queueing, they are doing the watching half of the lesson.
Two minutes on the wall each, not five. A short lap that ends with everybody still interested beats a long one that ends with four children sitting down.
Frozen partway up. Lower them, no discussion. A first rope lap that ends on their own terms is one they come back to.
The ground four drift off. The job was too vague. Make it countable: how many times did that foot move after it landed.
The swap eats the block. Harnesses on before the session starts and both halves briefed at once, or the changeover costs ten minutes.