"Tier 3" typically refers to the highest level in a multi-tiered system, often used in education, business, or healthcare. In education, it may denote intensive interventions for students who require significant support beyond standard classroom instruction. This tier focuses on individualized strategies to address specific learning needs. In a business context, "Tier 3" can describe a category of suppliers or vendors that provide specialized services or products. These suppliers often serve niche markets and may have less direct interaction with the primary company compared to Tier 1 and Tier 2 suppliers, who are more integrated into the supply chain.