what CG said
and you could try low slow passes at head high then 2 foot with just a little throttle then have him cut the throttle all the while instructing to keep the fuse flat elevator controls speed here and throttle determines decent rate. keep telling him to "hold it up"( to slow when touch down occurs) with elevator (no power at all ) and this will induce the desired flair.

also print out the landing teaching guide available on this site under "rc comunity" and "rcuniversity" this will give him the all inportant WHY we do it this way. and really improves cognition of technique for student and instructor.. i reread it often and it is SOP for my students