My mare is a 14.3 hand welsh/QH. She is 7 years old and has been jumping for the last 3 years. Usually we do jumping in the spring, summer, and fall, then I stop during the winter as it is cold, the ground is hard, and there is a potential for ice. I have just started her on jumping again for his year. I started her 2 weeks ago first on cross rails, then low verticals, then a small course, then higher verticals. She HAS been in training this whole winter though, so I didn't just begin jumping her when she wasn't in shape. I always do hill work, and walk, trot, and canter circles in the winter to keep her fit year round. My main questions is, how high can this mare jump? I wish I could say that I'm a great horse person and I know my horse well enough to tell her limit, but the problem is she loves jumping so much and tries so hard for me that I'm afraid she'll hurt herself trying too hard. Yesterday we did some work over 2'6" verticals and she did great. It when I raised it to 3' she hit it. Thinking maybe she hadn't expected the raised jump I tried it 2 more times and she knocked it both times. So I decided to stop before she possibly got hurt and thought maybe we would work on it again in another week when she gets more muscle. I have no idea what the horse to jump height ratio is, or if there is one. I would love to jump a 3' course this year with my horse for the 4H show, but I don't want her to hurt her legs or overheat. Just if anyone.could tell if here is a decimate limit or whether she should be able to jump that high that would be great. We jumped one 3'3" jump last year but that was when she was in top condition and it was only a single jump, not a course like I'd like to do.