Possible Clues:

• Excessively instructive
• Instructive
• Intended to teach
• Excessively lecture industrial development agency in Washington with jerk
• Did take action I see regarding how patronising teacher performs
• Instructive, perhaps excessively
• Edifying
• Turns up, police department guards it from villain - it's morally instructive
• Did be playing, I see, at teaching
• Completed dramatic work's opening chapter with a message