Historical clue formulations

• Coaches — 2019-06-16
• Certain teachers — 2013-08-29
• One-on-one teachers — 2005-09-05
• After-class aides — 2004-05-04
• After-class aides — 1998-12-13
• Private instructors — 1998-10-05
• Coaches — 1994-06-12