O.C.G.A. § 16-11-125.1
Definitions
As used in this part, the term:
(2) "Knife" means a cutting instrument designed for the purpose of offense and defense consisting of a blade that is greater than five inches in length which is fastened to a handle.
The max length is 2 inches in a school, otherwise you're safe up to a 5 inch blade. After 5 you'll need a weapons carry license
Just dredging this up as I had a nice discussion with a local LEO on this. Granted, I live in a nice little rural community within a very gun/knife friendly county. I do have my "weapons carry license", but am quite confused on this law...or at least how it could be interpreted.
If your knife isn't "designed" for offensive or defensive purposes, is it excluded from the blade length requirement? If so, all of my knives are designed for hunting, wilderness survival or as a utility knife
Blade length is always going to be interpreted differently and the LEO I discussed this with thought it was just the sharpened edge, not from the "hilt". When I was stationed in TX, I had four different interpretations from four different LEO's (one a Federal LEO on a military installation). A good example is what I've been wearing for the past 12 years:
Note the "choil"; although this blade from the hilt to tip is less than 5", the sharpened edge is less than 4". This type of interpretation will never go in your favor, but is an interesting aspect that LEO's have a hard time determining a consistent way to interpret. Of course, as much as I consider this a "utility" knife, the name Advanced Tactical Assault Knife (ATAK), kind of screws you if you really need to defend yourself in court

Knife makers just need to avoid the tacticool names and focus on utility, search and rescue, general purpose, hunting, fishing, etc.
Does the term "fastened to a handle" mean fixed blade? The definition certainly can be viewed that way and if so, this excludes all folders?...So a Cold Steel Raja, older CRKT Sifu or any other mega folder would be expempt

I know Atlanta specifically mentions locking folders in their ordinance, but the state law doesnt specify outside of a blade fastened to a handle, which in my non-legal opinions alludes to a fixed blade. Interestingly, the LEO also considered this to be a fixed blade, but when shown some large folders, he said it would apply to them as well (I think is what followed afterwards).
Of course the worst aspect to any state laws is local city ordinances including federal property locations or federal property that is leased by the state. Hopefully this will get amended down the road for more clarity, but I honestly believe vague laws are a prosecutors wet dream.
ROCK6