The document discusses the importance of direct vocabulary instruction for student academic success, noting that vocabulary knowledge is strongly correlated with academic achievement, standardized test scores, and life success. It provides a rationale for why teachers should teach vocabulary and offers guidance on developing vocabulary lists, choosing which words to focus on, and acquiring new vocabulary through various methods of direct instruction. The goal of vocabulary lessons should be to build students' academic background knowledge, particularly for those from low socioeconomic backgrounds or who are English language learners.