Final answer:
The principal did announce new attendance rules, the issue of cafeteria lines during recess, and the immediate notification of parents upon student absences, indicating a proactive approach to school management.
Step-by-step explanation:
Yes, the principal did make an announcement. When addressing students, the principal outlined new attendance rules and expressed challenges that teachers face in managing the cafeteria lines during recess. Additionally, it was mentioned that notifications would be sent to parents immediately upon a student's absence being recorded. These points suggest that the principal is proactive in communicating essential information and enforcing school policies to ensure a well-organized and disciplined school environment.