Nalinikantha: This chapter is entitled, "Prahlāda Instructs His Demoniac Schoolmates." Teaching the children.
Prabhupāda: He was taking opportunity to preach Kṛṣṇa consciousness during tiffin hours. When the teachers would go away—during tiffin time, of course, the teachers go away—and Prahlāda Mahārāja immediately will . . . (aside) Āsun. Let him come here. He'd immediately take the opportunity of preaching Kṛṣṇa consciousness. (greets Indian guests in Bengali) Āsun, come on. (break) . . . Kṛṣṇa consciousness even in the classroom. All the school friends were sons of demons, means atheist class of men. So they did not know anything about God, and Prahlāda Mahārāja was taking advantage of the school tiffin hour and preaching. So his first beginning of the teaching was kaumāra ācaret prajño dharmān bhāgavtān iha (SB 7.6.1): "From the beginning of life, when we are children, we should learn about Kṛṣṇa consciousness." That is the beginning of his teachings.