I've noticed that girls in my school don't wear the socks high...Apparently Singapore schools are like opposite of Japanese. Wearing socks to knee levels actually heighten attractiveness. I shall use maths to explain it to you.

Let d be the distance socks are away from thighs, while s is the sexiness of legs.

Attractiveness=(1/d)^2 + s

while,
sexiness of legs=length of legs/fatness of leg

The attractiveness is actually a bell-shaped curved. As it nears the knees it becomes more unattractive, but once it crosses the knee, the curve goes up again.

However a number of factors make this very unlikely in our circumstances:
The heat in Singapore makes it very unpractical to wear socks so high, as can be seen from the above equation.
Socks. Our school mandates students to wear school socks, which, frankly put, is quite a turn-off
Novelty. Doing something like this would be considered too novel, as anime culture has not permeated our country, so even if somebody does this, it may not be seen as sexy.

Finally here's a illustration for you to understand.