Im gonna take my chocolate labrado pup to training cles i need so information?

im gonna be taking my labrado pup to dog cles and im a bit scade with lots of stuff like how she'l be and the way she'l be with other dogs and mostely the way she'l be treated i mean do i go with her dose she stay there without me and what she'l be tought stuff like that can anyone give me information or advice stuff like that ?