An elegant email can miss the deadline, omit the needed file or leave the reader without a next step. A plainer email can complete the task despite an occasional grammar error. CEFR Borderline Lab makes that judgment visible.

Practise with 24 original fictional workplace-writing responses in 12 contrast pairs. Tasks include requests, delays, complaints, scope boundaries, status updates, handovers and meeting recaps. Some pairs are closer calls; one pair has equally effective responses in different styles.

Use four separate local judgments: Task outcome, Reader awareness, Organisation, and Language control and range. Quote evidence before comparing with another rater or the reference profiles.

Your download includes: • A 28-page blind-rating casebook and original four-criterion rubric. • A 15-page reference guide with criterion-level evidence, pair debriefs and facilitator questions. • A complete 90-minute workshop agenda, disagreement protocol and moderation record. • All briefs and responses in an editable 25-page DOCX. • A three-tab XLSX workbook for two raters or two solo sessions, criterion gaps and exact agreement on eligible records. • A self-contained offline lab with reference reveal and note export. • A quick-start guide and both licence texts.

Start with CW01/CW02, compare evidence, then use the closer scope and deadline pairs to discuss adjacent ratings. Record one anchor clarification and the next evidence to collect.

Choose Individual ($99) for one educator's private professional development, or Team ($299) for up to ten named staff in one organisation and repeat internal workshops. Both options deliver the same files; the chosen option sets your rights.

B1/B2 describes the teaching context. The pack's local 1–4 ratings have no validated conversion to a CEFR level. These fictional profiles are instructional judgments, not independently moderated anchors, certification or evidence of a live test's reliability. No live facilitation or personal scoring is included. Release 1.0.