Measure standing tall
Athletic shoes on, heels together, back straight against a wall, eyes level. Mark the wall at the crown of the head and measure to the floor. Golf posture starts from a real standing height, not a slouched one.
Do not buy clubs to grow into
Clubs that are too long carry heavier heads. Kids compensate by dropping a shoulder and scooping at the ball — a habit that takes years to undo. Buy the size that fits them today and use the Outgrowth Trade-In when they move up a bracket.