The list typically breaks down into three columns:

Don't just read Resource 5.3. Laminate it. Annotate it. Argue with it. But above all, use it . It is the difference between teaching words and teaching word power . Have you used LETRS Resource 5.3 in your classroom? What word caused the biggest debate in your team (ours was "infer" vs. "predict")? Share your experience below.

| Tier | Description (per LETRS 5.3) | Examples | Instructional Priority | | :--- | :--- | :--- | :--- | | | Basic, everyday words. Rarely need instruction for native speakers. | clock, baby, happy, run | None (except for ELLs) | | Tier 2 | High-frequency, cross-curricular academic words. Mature language users. The sweet spot . | coincidence, absurd, fortunate, analyze, establish | Highest Priority | | Tier 3 | Low-frequency, domain-specific words. Best taught in context of a lesson. | photosynthesis, isthmus, pentameter, amortization | Contextual / Just-in-time |

Using Resource 5.3 faithfully means doing a word-level audit of every passage before teaching. For a middle school ELA teacher with 120 students and three preps, this is unsustainable. The list is research-perfect but pragmatically exhausting. LETRS acknowledges this but doesn't offer enough tech integration (e.g., automated text analyzers). Part 4: A Case Study – Applying Resource 5.3 to a Real Text Let’s test the list on a sentence from The Outsiders by S.E. Hinton: "I was reluctant to sass Darry, but he was being so unreasonable ." Step 1 – Identify potential words: reluctant, sass, unreasonable.

Resource 5.3 is not just a list; it’s a process. It explicitly reminds teachers to check for morphemes (roots, prefixes, suffixes). For example, before teaching unfortunate , the list prompts: Can students use 'un-' (not) + 'fortunate' (lucky)? If yes, move that word to incidental instruction and save explicit time for absurd .

is arguably the single most practical tool in the entire LETRS manual for improving reading comprehension. It moves vocabulary instruction from "look it up" to strategic, cognitive science-based triage. If every teacher in America used this list to select their weekly vocabulary words, the gap in academic language between advantaged and disadvantaged students would narrow significantly.

ESL specialists (who need to modify the Tier 1 assumptions), and kindergarten teachers (where almost all words are Tier 1, making the list less relevant until late first grade).