First off, it is BOLA, not bolo. A bolo is what the Argentine cowboys use like our cowboys used a lasso. By the way, the bola is the State Tie of Arizona. The young man was wearing a tie...so far, I have not seen anything that specified a 4-in-hand, nor denied a bow...but, I have not read the school principle's decree.
I'm aware of the difference between a bola and a bolo. I wasn't aware that the State Tie of Arizona was a bola, nor was I aware that states had State Ties ;)
Nope. "Bola tie" and "bolo tie" are both acceptable, according to Mr. Webster. Also, not to be too pampas about it, but the Argentinian weapon is also a "bola". The bola tie was originally called a "piggin tie" by its inventor, but the name "bola" stuck because of its resemblence to the Argentinian device. FYI, a "bolo" is a long heavy single-edged knife of Philippine origin used to cut vegetation and as a weapon.