Luke 2:47

‘And all who heard him were amazed at his understanding and his answers.'

The Rabbis would each sit with a group of disciples round them. They would themselves ask questions of their listeners, and they would then teach and explain and ask for questions. And all to whom He asked His questions, and all who were listening, were amazed at this boy's understanding, and the answer that He gave when He answered their questions (not to teach but to learn). He had truly grown in wisdom and understanding.

(Had this been an invented story or a legend we would have had Jesus correcting the Rabbis).