This document provides a toolkit to help schools develop effective referral pathways to address students' mental health needs. It was developed by experts in school mental health under a contract with SAMHSA. The toolkit contains three chapters that provide guidance on assessing a school's current referral system, implementing a multi-tiered problem-solving approach to promote mental health, and building effective partnerships between schools and community mental health providers. The goal is to help schools establish sustainable mental health support systems using evidence-based practices.