Everytime they get near the machine....nah not that bad
I found that its the better students are the ones that will catch you out, as you tend to "relax" a little more with them then students that arent so hot.
Had the wrong pedal pushed on recovery on an auto
Learnt to lock my foot in front of left pedal so if they pushed right pedal in (S300cbi) the left would not move past current position so the yaw of a lifetime could be avoided.
Have had some interesting moments, and not just from students. Had some funny event's with pilots getting a flight check or currency ride.
Hughesy