How Often To Jump A Young Horse?

I would get her used to it first and slowly start working her up to more and more jumping. Remember, you know your horse best and you should be able to judge how much she can take (without overdoing it) if you can train her to jump! This requires weeks of building up muscles and if you have already been doing that (as it seems you have, with riding and jumping 4 times a week) who am I to tell you what to do? A fit horse can jump about 4 hrs a week, not including ANY other riding (warming up, trails, flatwork, & so on). I think what you are doing now is great, as long as you think your horse is having a fun, non~ stressful, learning environment, and if you are happy with how she is doing. Remember also, She is young. She will get bored easily. You need to incorporate things that are fun for her into your workout too, making it fun for you AND your horse ~ which you are probably doing, I just need to put that in there in case :) !