Drona became the Acharya, or Teacher, of Pandavas and Kauravas
after he showed his expertise with bow and arrow. Legend has it that
Bhishma, the grandsire of Hastinapura, was in search of an efficient Guru to
teach Pandavas and Kauravas the art of weaponry. When the incident took place,
Pandavas and Kauravas were children and were living in Hastinapura.
One day Pandavas and Kauravas were playing with a ball.
Suddenly the ball fell into a deep well. Children did not know how to retrieve
the ball and they crowded near the well.
Dronacharya was passing by and the commotion created by
children caught his attention.
When he found out the reason for children crowding near a
well, he promised to help them.
He then took his bow and arrows and shot an arrow on the
ball. He then shot another arrow on the end of the previous arrow. Thus a line
of arrows was created by Dronacharya. Soon the ball was retrieved from the deep
well.
The children who witnessed this amazing feat ran to inform
about it to Bhishma.
Bhishma immediately realized the potential of Dronacharya
and appointed him the Guru of Kauravas and Pandavas.