I have a few points to add.

1 - with a slow swing speed, your student is probably not getting the optimal launch angle on the ball. As you know, the launch angle should be able 15*. The driver should be about 10 - 13* for slower swingers.

2 - shaft stiffness - once again with the swing speed, it sounds like your student should be swinging a regular or maybe even a senior flex shaft.

3 - club head - the driver could be 'spent' and has nothing left in it. Have you hit this club yourself? I have had drivers that have just went dead and there was nothing else to do but replace it.

4 - re: lowpost's suggestion on dropping the driver - not a bad idea. Add another inch onto the shaft which will add about 10 -20 yards. Obviously your student hits the 3W well and the 3W will produce a optimum launch angle (typical 3W is 15*).

__________________
Gord

Quote of the month:
"It's easy to see golf not as a game at all but as some whey-faced, nineteenth-century Presbyterian minister's fever dream of exorcism achieved through ritual and self-mortification." ~Bruce McCall