Join Date: May 2009
Location: Winnipeg, Manitoba, Canada
The string test is based on the idea that for the average horse, they are born with 90% of their cannon already at adult growth, and they reach 100% at somewhere between 6 months and 2 years old. This is why the string test CAN be accurate, but a lot of people find it's not. All horses mature differently, so it can provide a rough estimate.
Typically by about 2 years old, a string test will give you an accurate reading of final mature height.
I hope God tells her to smash her computer with a sledgehammer.