Answer: Problem-solving policing
Explanation:Problem-solving policing is the technique followed in the field of comparatively high crime rates by analyzing the problem and then solving it .It is also known as problem-orientation policing(POP).
The case mentioned in the question depicts about problem-solving policing method used by the police officers.They diagnosed the issue and then took appropriate step by introducing basketball league ,the students of both the high schools can interact and talk with each other. This will solve the issue that occurs due to students.