The logic is the same whether it’s a jet or a PA28: power first ensures minimum amount of runway is used during the ground run.
Also, is it wise to teach students flaps-first for touch-and-goes and power-first for go-arounds? In a real go-around situation, I’d say there’s a fair chance of an under-pressure novice getting it wrong and retracting flaps first, possibly with dire consquences.
HP