>>Wear above-the-knee socks with skirts short enough to leave one or two inches of bare thigh.
OP, if you want to get technical and analytical about this, there's a formula called the "absolute proportion moe" that you can follow. It specifies the ratio of skirt length to knee sock length, and works as follows:
Establish the distance A between the bottem hem of the skirt and the upper hem of the knee socks as being 1 unit.
Provided this, then the distance B between the hips* and the bottom hem of the skirt should measure 2 units.
The distance C between the upper hem of the knee socks and the knee joint should measure 3 units.
This 1:2:3 ratio between distances A, B, and C is the heart of the absolute proportion theory. It has been scientifically formulated to instill maximum feelings of protectiveness and adoration in anyone who views its proper application. Use this knowledge for care -- do not let it fall into the hands of those who would use it for evil.