Small pony, full-size safety rules
A Shetland pony invites the dangerous assumption that small means harmless. Shetlands are exceptionally strong for their height, with quick mouths and quicker opinions, and a child who treats one like a large dog gets bitten, barged, or towed. Teach the same geometry used with any horse: come in at the shoulder where his eye sees the child, say his name before touching, keep a hand on him while nearby so he knows the child's position, and go around the front, never behind his heels or under his neck. The rules feel strict for a pony standing no taller than the child, and that is exactly the point, because habits learned here transfer safely to bigger animals later.
Grooming and leading with an adult always in reach
Grooming a Shetland gives children kind, useful contact under control. A child brushes his neck, shoulder, and back with the hair's growth, learns to read a swishing tail or pinned ears as a stop signal, and keeps clear of his hindquarters and under his belly. Leading is taught over a few metres in an enclosed paddock, the child at his shoulder holding the rope with an adult's hand resting on it too, turning him away from the child and never letting the rope loop around a wrist. If he plants his feet or pulls toward grass, the adult takes over, because a tug-of-war a child loses teaches the pony that children can be ignored.
Treat manners matter more with a Shetland than almost any breed
Food is where Shetland ponies train children instead of the other way round. This breed is famously food-driven, and hand-fed treats quickly produce a pony who searches pockets, nips at zips, and swings his head into children expecting payment. Put every treat in his bucket or on the ground in front of him, keep pockets empty during pony time, and make children show empty hands and step back after feeding. Children also learn never to hand him grass through the fence or extra feed at the gate, because a Shetland's easy-keeping build makes casual extra food a genuine health risk for him, not just a manners issue. Kindness, children learn, sometimes means saying no to those pleading eyes.
Firm and kind are the same lesson with this breed
Children often think kindness means never correcting a Shetland, and the pony exploits the loophole within a week. Teach them that a pony who is allowed to barge through gates, rub his head hard against a child, or drag his handler to grass is being set up for a frustrated adult world later. Corrections are calm and immediate: an adult resets his position, the child asks again for the polite behaviour, and good behaviour earns the scratch or brush he enjoys. Children never smack, shout at, or tease him, and teasing games like holding food just out of reach are banned outright because they manufacture the very nipping everyone then complains about.
Keep his quirks written down for the next supervisor
Shetland ponies are individuals with long memories and specific dislikes. Record in his profile what a supervising adult needs: he pulls toward the long grass by the gate, he dislikes spray bottles, he is angelic for grooming but pushy at feed time, and which children may lead him versus only groom. Update the notes after any incident, a nip, a bolt for grass, a scare, while the detail is exact, because the pattern across notes is what lets the family adjust his handling before something bigger happens. Keep the core rules attached to the same record so a new helper reads them first. With KinsLe, Family Sharing puts those rules and quirks in his shared profile, so every adult teaches this pony the same way.