Females make better swim instructors
 

Mrs Fox who was the swimming instructor at my schools swimming lessons was an evil old woman that hated children. The children feared her more than they feared the water.
Those that couldn't swim before going to school swimming lessons never went swimming again after school swimming lessons ended.
Children need to build up self confidence and confidence in the water, they can't do that if they are being shouted at and humiliated.
Good people make better swimming instructors.

Haha, I think its depend on the student who wants to lear swimmer, male and female both are good instructors.

If you are guy then you definitely think so, at my teenage I have a female instructor and I am not confident now to do swim.....