Should Teachers Plan Week by Week or Get It All Done Before Term Starts?

Introduction

Every teacher faces the same planning dilemma at the start of each term: do you plan everything in advance — every lesson, every resource, every assessment — or do you take it week by week, responding to how the students are progressing?

Both approaches have passionate advocates. And both have significant drawbacks.

The answer, I believe, is neither extreme. The best approach is a 70/30 model: approximately 70% of the unit forward-planned before the semester begins, with a 30% buffer left deliberately for adaptation, fresh ideas, and responding to student needs.

But the right ratio depends on the curriculum you are teaching — and the age group sitting in front of you.

The Case for Week-by-Week Planning

The International Baccalaureate (IB) programme is built on the philosophy of inquiry-based, flexible planning. IB unit planners are designed to be living documents — updated and adapted throughout delivery as teachers observe how students respond to the material.

The IB's emphasis on student-led inquiry means that teachers are encouraged to follow the learners' interests, pivot when a line of questioning proves productive, and adapt activities based on formative assessment. Planning too rigidly goes against the programme's philosophy.

The benefits of this approach are real. Lessons stay fresh. Teachers can incorporate current events, respond to "teachable moments," and tailor activities to the specific needs of the class in front of them. There is a genuine creative energy to planning responsively.

But the risks are equally real. Week-by-week planning creates enormous time pressure. Teachers spend evenings and weekends preparing for a Monday lesson they had not even conceptualised on Friday. Resource quality suffers because there is no time for refinement. Consistency across parallel classes breaks down because each teacher is improvising independently.

And the burnout is significant. The relentless cycle of plan-deliver-mark-plan, with no buffer and no predictability, is one of the primary drivers of teacher exhaustion.

The Case for Forward Planning

Cambridge International Education offers a different model. IGCSE syllabi are structured, content-heavy, and examination-focused. The content is largely fixed — every student in the world sitting the same exam needs to cover the same material.

This makes forward planning not just possible but natural. Cambridge's schemes of work provide semester-level pacing guides that map topics across weeks and terms. Textbooks align closely with the syllabus. Assessments are standardised.

The benefits are substantial. Resources can be polished and quality-assured in advance. Teachers arrive on Monday morning knowing exactly what they are teaching and having materials ready. Collaboration with colleagues is easier because everyone is working from the same plan. And lesson delivery is calmer because the cognitive load of planning has already been handled.

The risks? Rigidity. Lessons that feel stale because they were planned months ago. An inability to respond to emerging student needs or current events. And the danger of teaching to the plan rather than teaching to the students.

The 70/30 Model: Plan Most, Adapt Some

The sweet spot, in my experience, is to build a forward plan that is roughly 70% complete — and to leave the remaining 30% deliberately open.

The 70% includes: the unit's key lessons, core resources, assessments, and the overall pacing. These are planned, prepared, and ready before the term begins. Teachers know the arc of the unit, the key learning moments, and the assessment milestones.

The 30% buffer is for: fresh ideas that emerge mid-semester — a brilliant article, a relevant current event, a colleague's suggestion. It is for responding to student performance data — if the class bombed the formative quiz on Topic 3, you need an extra lesson to reteach it. And it is for reworking resources that, in practice, did not land as expected.

This model gives structure without rigidity. Teachers have the security of knowing what is coming — and the flexibility to make it better as they go. ManageBac, the leading IB planning platform, actually supports this approach with unit planners that allow teachers to set a framework while leaving space for ongoing adaptation.

Primary vs Secondary: Different Stakes, Different Needs

The right balance also depends on the age group.

In primary education, more flexibility is appropriate. Assessments are lower-stakes. The curriculum is broader and more thematic. Teachers have more freedom to follow student interests, extend a topic that captures the class's imagination, or pivot when something is not working. The 70/30 model might shift to 60/40 — or even further toward flexibility in early years settings.

In secondary education, the stakes are higher. External examinations — GCSEs, IGCSEs, IB Diploma, A Levels — have fixed content and immovable deadlines. Syllabus coverage is non-negotiable. A teacher who runs out of time because they spent three weeks on a single topic is not being flexible — they are putting students at risk.

In exam-heavy secondary contexts, the ratio might tighten to 80/20. The forward plan needs to be comprehensive, with clear checkpoints to ensure coverage is on track. The 20% buffer remains important — students still need responsive teaching — but risk management of syllabus coverage becomes critical.

Education Advanced has documented how the most effective school leaders help teachers balance these competing demands by providing clear planning frameworks without micromanaging delivery.

Conclusion

There is no single right answer to the planning question. But the two extremes — winging it week by week and planning every minute in advance — are both suboptimal.

The best teachers are disciplined planners who leave room for spontaneity. They arrive each term with a clear forward plan and a deliberate buffer for adaptation. They know their curriculum well enough to be flexible without losing coverage. And they treat planning as a craft — not a chore to be done at the last minute or a box to be ticked months in advance.

What is your planning style? Do you plan everything before the term starts, or do you prefer to take it week by week? Does your school give you enough time to plan ahead? Share your experience in the comments below.