It was so, that when he had turned his back to go from Samuel, God gave him another heart: and all those signs happened that day.
This is the first of several references to groups of prophets in the historical books (cf. 1 Samuel 19:20; 2 Kings 2:1-7; 2 Kings 2:15-18; 2 Kings 4:38-41; 2 Kings 6:1-2). Though the term "school of the prophets" does not appear in the Old Testament, the texts noted identify groups of prophets who gathered together, sometimes under the leadership of a prominent prophet (e.g., Samuel, Elijah, or Elisha), apparently to learn how to present messages from the Lord and lead the people in worship. Some of them even had buildings in which they met, including ones at Gilgal, Bethel, and Jericho (2 Kings 2:1-5; 2 Kings 4:38-41; 2 Kings 6:1-2). Samuel evidently had such a "school" or group of disciples, and this group apparently also met in their own buildings (cf. 1 Samuel 19:18-19). [Note: For further discussion, see Ibid., pp. 164-66.] 