retraining

My 5 yr old gelding ALWAYS acts up when I ride him with other horses in the arena, he is always distracted, no matter what I do. What should I do? I ride him 3x a week and we do 1st level dressage and 18'' jumps, I have tried practicing turns on the forehand and on the haunches, squiggles...

hi. so basically i have a 7 yo stallion. he was started with dressage and he did really well. but the girl who started him didnt have any more time to continue so another girl started riding him. she did jumping with him and basically finished him. the issue is she taught him to ride with the...