Teach kids that with irons you must hit down on the ball to make it go up because the ball gains backspin by rolling up the face
There should be a slight weight shift in the swing, very minimal going back to your right side on to the inside of your right leg followed by a subtle bump to your left side on the initiation of the downswing getting the weight forward and eliminating fat shots
Imagine pouring a bucket of water on the green and where it would flow is the break