2. The child is the more you miss him, the more he wants to do it. Children may steal money just for fun at first, but adults are too aggressive and worry that children will become thieves in the future. Beating, scolding and education may make him feel vindictive. Please stop beating, scolding and educating.
3. Ask why you stole the money first, because you want to buy things or play games, or because you were blackmailed, and so on. If he doesn't tell or lie, he can ask his classmates, friends and teachers to investigate. Solve the problem fundamentally.