balk or not?

[steveo]

ok...i've heard to sides of this...tell me what you think.

R1 count and outs dont matter.

Right handed Pitcher is in the stretch, while recieving his sign he turns his shoulders to look at R1. Is this a balk? I'm pretty sure in high school it is, but what about OBR. I've heard both sides from coaches...that the pitcher can do anything until he becomes set, and i've heard that they can not turn their shoulders while engaged on the rubber.

Thanks.