Tier 2 vocabulary
Tier 2 words are the mature, transferable words that appear across many subjects but are rare in everyday talk. Teaching them explicitly is a strong lever on comprehension.
- Subject
- English / History / Science / Geography
- Key stage
- KS1, KS2, KS3, KS4
Isabel Beck and her colleagues’ tier framework changed how UK schools think about vocabulary teaching. The framework is simple, the implementation is hard, and the payoff is large.
What it is
A three-tier classification of vocabulary. Tier 1 is the everyday vocabulary that pupils pick up from conversation. Tier 3 is the technical vocabulary specific to a subject, like “photosynthesis” or “iambic pentameter”. Tier 2 is the academic vocabulary that appears across subjects in books, exam papers, and formal writing, but rarely in everyday speech.
Words like “establish”, “consequence”, “interpret”, “anticipate”, “ambiguous”. Pupils meet them constantly in print and almost never in playground talk.
Why it works
The tier 2 vocabulary gap explains a large part of the reading comprehension gap. A pupil who does not know what “concede” means cannot follow an argument that hinges on it. Teaching tier 2 words explicitly closes that gap faster than reading exposure alone.
The EEF literacy guidance reports for KS2 and KS3-4 both recommend explicit vocabulary instruction. The mechanism is partly direct comprehension and partly that pupils start to recognise the structures of academic language.
How to use it
Pick three to five tier 2 words from the upcoming unit. Teach each one with a Frayer model or a structured glossary entry: definition, characteristics, examples, non-examples. Use the word in spoken sentences across the week. Reward pupils for using the word in their own writing.
Visual Keywords and Word Building support the wider routine. Frayer Model is the standard template.
When not to use it
Tier 2 instruction should not crowd out tier 3 subject vocabulary. Both matter. The rule of thumb is: tier 3 is taught in lessons that need it. Tier 2 is taught as a continuous strand across the year.
Related Chalk tools
Frayer Model, Visual Keywords, and Word Building all support explicit vocabulary teaching.
Evidence
Beck, McKeown & Kucan's tier framework is supported by decades of vocabulary research and by the Marulis & Neuman meta-analysis of vocabulary interventions. The EEF literacy guidance reports for KS2 and KS3-4 both recommend explicit tier 2 vocabulary instruction.
Try this in Chalk
Related concepts
Questions teachers ask
What are tier 1, 2, and 3 words?
How many tier 2 words should I teach per week?
How do I pick which tier 2 words to teach?
Frayer Model
Vocabulary instruction template with definition, characteristics, examples, and non-examples.
Open Frayer Model