In this scenario, Keenan's behavior issues are starting to escalate from occasional inappropriate behaviors to more significant issues, including repeated incomplete assignments and instances of disrespectful behavior.
Tier One typically involves universal interventions that are implemented for all students. This includes establishing clear expectations and providing general praise and positive behavior reinforcement, which Mrs. Patz is already doing.
Tier Two involves more targeted interventions for students who are showing some behavioral concerns, like Keenan. This could include small group support, more specific monitoring of his behavior, or additional praise and reinforcement tailored to his needs.
Tier Three involves intensive, individualized interventions for students who exhibit severe behavioral issues that significantly impact their learning and the learning of others.
Given that Keenan's behaviors are more than occasional and have recently escalated, Tier Two would be the best option. This tier would allow for targeted strategies to address his specific needs while still being less intensive than Tier Three which might be reserved for more severe or persistent behavioral challenges.