Protocol
Define the B2-to-C1 gap from a real sample
A plateau becomes workable when it has an observable shape.
When it fits
- You feel stuck at an upper-intermediate level but the problem is still described only as 'I need better English' or 'I need C1.'
When to avoid it
- CEFR labels are broad summaries. One weak sample does not establish a person's overall level.
Why it matters
Take one representative performance sample: a three-minute answer, meeting explanation, email, essay or listening task. Compare it against the dimensions that actually change from B2 toward C1: range, accuracy, fluency, discourse control and coherence. Choose one or two gaps that materially limit the target situation. Do not turn the entire CEFR into this week's syllabus.
Steps
- Capture one uncoached sample.
- Mark range, accuracy, fluency, interaction/discourse and coherence separately.
- Name the one or two gaps that most affect the target use.
- Choose a practice task that can expose those gaps again.
- Keep the original sample for a delayed comparison.
An example
A consultant can explain SAP issues accurately but pauses while searching for linking phrases and produces jumpy long answers. The next cycle targets discourse functions and retrieval speed, not beginner grammar.
Check your result
The plateau statement names a performance gap that can be observed again in a later sample.
Keep this limit in mind
- CEFR labels are broad summaries. One weak sample does not establish a person's overall level.
Connected ideas
Use beforeSeparate range, accuracy and fluency before fixing the plateau
Evidence and sources
CEFR descriptors distinguish C1 from B2 through broader linguistic range, higher grammatical control, more effortless fluency, a larger repertoire of discourse functions and more controlled coherence.
CEFR describes performance; it does not prescribe a training method or a fixed number of study hours.
Qualitative aspects of spoken language use - CEFR Table 3 · B2 and C1 rows