Stretch or compress a unit as pacing changes — the plan stays coherent.
Pacing always shifts. Assemblies, reteaching days, faster-than-expected progress — they all reshape the unit window. Planlark lets you stretch or compress a unit directly on the timeline, and the lesson sequence, dates, and surrounding plans adjust to fit the new span without a full rebuild.
What the AI can do
AI can update unit dates and keep the surrounding sequence aligned to the new span.

The unit timeline adapts when pacing changes instead of forcing a complete rebuild.
Context aware
Connected to the weekly planner, schedule rules, and unit structure.
Teacher controlled
You review and refine changes instead of handing the whole process away.
Built for school reality
Designed around shifting timetables, real curriculum work, and mid-week edits.
Where Unit Timeline Resizing fits into the planning week.
Adjust a unit visually on the timeline as pacing shifts because of assemblies, reteaching, or faster-than-expected progress.
Keep the unit planner grounded in the real school calendar so longer or shorter units reflect actual teaching time.
Connect timeline changes to the lesson sequence so the plan still makes sense after the adjustment.
Real reasons teachers reach for this feature.
Extension for reteaching
Students need more time on a concept. Stretch the unit by three days and the sequence spreads to fill the new window.
Compression for pacing
A unit finishes early. Shrink the timeline and the remaining lessons consolidate onto fewer class dates.
Cross-unit coordination
Extend one unit and the adjacent unit start date shifts forward automatically to avoid overlap.
What it looks like when a teacher actually uses it.
These example prompts and outcomes show the kind of planning work this feature is designed to handle.
Prompt
"Extend the economics unit by one week and keep the remaining lessons aligned with the new end date."
Outcome
Planlark updates the unit span, preserves the sequence, and adjusts the surrounding planning context to fit the new window.
Prompt
"Shrink the poetry unit to end by Friday instead of next Wednesday."
Outcome
Planlark compresses the timeline, consolidates the remaining lessons, and updates all dates.
Prompt
"Push the start of Unit 4 back by one week."
Outcome
The AI moves Unit 4 forward, adjusts its lesson dates, and checks for conflicts with adjacent units.
Keep exploring the planning workflow.
Related help
Learn how to use this in the product.
Curriculum
How to import curriculum and outcomes in Planlark
Paste curriculum text or ask Lark to import a framework, then review sub-outcomes, guiding questions, QA warnings, and shared-library approval before planning from it.
Read help guideUnit Planning
How to build units and lesson sequences in Planlark
Use the Unit Planner to create a unit, add source material, generate lesson sequences on real dates, and keep outcomes tied to the plan.
Read help guideAssessments
How to create assessments and assignment templates in Planlark
Build quizzes, exit tickets, standard assignments, and text-based assignments with answer keys, editable question types, and AI control over each assessment.
Read help guideRelated features
Keep exploring the workflow.
Unit Planning
Unit Import & Sequencing
Paste textbook chapters or curriculum text and generate a full unit with sequenced lessons in one step.
Read feature pageScheduling
Auto-Scheduled Plans
Units and lesson sequences can land on real class dates automatically using your rotation, holidays, and calendar overrides.
Read feature pageCalendar
Calendar Command Center
Your planner stays connected to the actual school calendar, not a generic week view.
Read feature pageEarly access
Try Unit Timeline Resizing inside the full planner
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