my gsd is nearly a year old  i take her every week to my local gsd training club shes fine with all the dogs there but everytime we meet up with other dogs when i take her out for walks she pulls at lead and barks all she wants to do is play but its getting really embarrassing and i do get some dirty looks shes great apart from that but its getting to a point i dread taking her out please help i am desperate

Have you asked your trainer for advice?