What is the purpose of tiered vocabulary instruction?

The purpose of tiered vocabulary instruction is to teach vocabulary based on complexity and frequency of use, which is fundamental for effective language acquisition. This approach classifies vocabulary into tiers: Tier 1 includes basic words that most students are already familiar with; Tier 2 consists of high-frequency words that are used across various contexts; and Tier 3 includes domain-specific or low-frequency words that are more advanced.

By focusing on words according to their complexity and how often they are encountered, educators can tailor instruction to meet the diverse needs of students. This strategy helps learners acquire a richer vocabulary that enhances their reading comprehension and overall communication skills. It supports the idea that vocabulary development is not just about memorizing words, but rather understanding how to use them effectively in different contexts.