Does it currently jump around at 2’6 or at 3’ with an experienced rider? Does it have a good lead change? Does it have the step to get up the lines for the child/adult hunters?
A couple examples:
A family member just had their horse kidized/amateurized by a trainer I know well: horse had done pre-green at A shows, but was stopping with a kid and bucking, oftentimes wouldn’t canter. 2 months of training and the horse is chipping for the kid, bailing her out and more or less going around pleasantly in the Childrens. Key: they also put it on their show routine of an excellent vet, great farrier, chiro, etc., which could have had the biggest impact of all.
Another trainer I heard about recently got sent a horse to him who wouldn’t do a lead change. They eventually had to send it to a cowboy who got it done, nobody wanted to ask how. The horse is going around now nicely in the pre childrens.