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.
AI can
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.
How teachers use unit timeline resizing
Planlark keeps this feature connected to the rest of the planning system so teachers do not have to rebuild context every time something changes.
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.
When teachers reach for this
Real scenarios where unit timeline resizing saves planning time and keeps everything connected.
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 in practice
Real requests a teacher might make and what Planlark does in response.
Teacher request
"Extend the economics unit by one week and keep the remaining lessons aligned with the new end date."
What Planlark does
Planlark updates the unit span, preserves the sequence, and adjusts the surrounding planning context to fit the new window.
Teacher request
"Shrink the poetry unit to end by Friday instead of next Wednesday."
What Planlark does
Planlark compresses the timeline, consolidates the remaining lessons, and updates all dates.
Teacher request
"Push the start of Unit 4 back by one week."
What Planlark does
The AI moves Unit 4 forward, adjusts its lesson dates, and checks for conflicts with adjacent units.
Related features
More ways Planlark reduces planning work
Every feature connects back to the same planner, calendar, and AI workflow, so teachers do not have to juggle separate tools.
Unit Planning
Unit Import & Sequencing
Paste textbook chapters or curriculum text and generate a full unit with sequenced lessons in one step.
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AI Copilot
A manager-driven copilot that works across your planner, units, outcomes, and calendar with real context.
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Auto-Scheduled Plans
Units and lesson sequences can land on real class dates automatically using your rotation, holidays, and calendar overrides.
Learn moreTry Unit Timeline Resizing inside a real teacher planner
Join the waitlist to use unit timeline resizing with AI-driven lesson planning, unit planning, and school calendar workflows.