Choosing between an A4 vs A5 teacher planner is about much more than the size of the pages. The right planner should fit the way you teach, the amount of planning you do each week and how you move around school during the day.
Some teachers spend most of their time in one classroom with plenty of desk space. Others carry everything between lessons and need something lighter that fits easily into a school bag. Neither option is better for everyone, but one is likely to suit your working day more than the other.
This guide compares A4 and A5 teacher planners, looking at writing space, portability and everyday classroom use to help you decide which size is the better fit.
Quick Comparison: A4 vs A5 Teacher Planners
| Feature | A4 Teacher Planner | A5 Teacher Planner |
|---|---|---|
| Writing Space | Excellent for detailed lesson planning | More compact, with enough room for concise planning |
| Portability | Best kept on a desk or carried in a larger bag | Easy to carry between classrooms |
| Weekly Planning | Larger weekly spreads with more writing room | Clear layouts that encourage concise planning |
| Desk Space | Needs more room when open | Fits comfortably on smaller desks |
| Best Suited To | Teachers who write detailed plans and notes | Teachers who prefer a lighter, more portable planner |
When an A4 Teacher Planner Makes More Sense
An A4 teacher planner suits teachers who like to keep everything in one place without feeling restricted by space.
The larger pages give more room for lesson objectives, resources, reminders and meeting notes. If you regularly make annotations throughout the day or use your planner for more than lesson planning, the extra writing space soon becomes valuable.
Many teachers also find an A4 planner easier to work with during planning time. Weekly spreads feel less crowded, making it easier to see the shape of the week without squeezing notes into margins.
This can be particularly useful if your planner is also where you record assessment reminders, intervention notes or follow-up actions after lessons.
An A4 planner often works well if you:
- Spend most of the day in one classroom
- Have a permanent desk or workspace
- Write detailed lesson notes
- Like seeing the whole week clearly across a larger page
The trade-off is portability. A larger planner naturally takes up more room in a school bag and is less convenient to carry if you regularly move between classrooms.
Teachers looking for a larger planning format can explore the A4 Wiro Bound Teacher Planner or the A4 Loose Leaf Teacher Planner.
When an A5 Teacher Planner Makes More Sense
An A5 teacher planner is often chosen because it is practical rather than because it is small.
For teachers who move around school throughout the day, carrying a lighter planner quickly becomes an advantage. It slips easily into a bag, takes up less space on a desk and is comfortable to carry between classrooms, meetings and staffrooms.
Choosing an A5 planner does not necessarily mean sacrificing organisation. Many teachers naturally plan in shorter notes rather than lengthy paragraphs, so the writing space is more than enough for everyday lesson planning.
An A5 planner is often a good fit if you:
- Move between classrooms regularly
- Travel between sites or departments
- Prefer concise planning notes
- Want a planner that is easy to carry all day
Some teachers also find that the smaller format encourages clearer planning because only the essential information ends up on each page.
If portability is your priority, take a look at the A5 Wiro Bound Teacher Planner or browse the A5 Loose Leaf Teacher Planner.
Best Size for Primary Teachers
There is no single answer for primary teachers because working styles vary so much.
Teachers who spend most of the day with one class often appreciate the extra room an A4 planner provides. Planning across multiple subjects, recording reminders and keeping wider classroom notes can quickly fill a smaller page.
On the other hand, some primary teachers prefer an A5 planner because it is easier to move around the classroom with and takes up less desk space during lessons.
The deciding factor is usually how much detail goes into your planner. If it is your main planning tool, A4 often feels more comfortable. If you mainly use it for weekly overviews and reminders, A5 can work just as well.
Best Size for Secondary Teachers
Secondary teachers often have a different set of priorities.
Teaching multiple classes across different year groups usually means carrying a planner between rooms throughout the day. In that situation, portability becomes more important than it might be in a primary classroom.
At the same time, secondary teachers often need to record more individual lessons, which makes writing space valuable.
For teachers who prefer detailed planning and spend time preparing lessons at a desk, an A4 planner can be an excellent choice. Those who move constantly between classrooms may find an A5 planner strikes a better balance between writing space and practicality.
The decision often comes down to whether your planner spends more time on your desk or in your bag.
Best Size for Trainee Teachers & ECTs
Early career teachers often write more detailed lesson notes than experienced colleagues.
During placements or the first few years of teaching, it is common to record reflections, mentor feedback and planning ideas alongside lesson plans. An A4 planner provides more room for this extra information without pages feeling overcrowded.
That said, trainee teachers also tend to carry plenty of resources between classrooms. If portability matters more than writing space, an A5 planner may still be the better choice.
There is no right or wrong answer here. It depends on whether your priority is having more room to write or something easier to carry throughout the day.
Does Binding Type Change the Decision?
Planner size is only one part of the decision. Binding can influence how the planner feels to use as well.
Wiro Bound
A wiro bound planner opens flat on a desk, making it easy to write across the weekly spread. Many teachers prefer this because pages stay in place while planning lessons.
Loose Leaf
Loose leaf planners offer more flexibility. If your timetable changes regularly or you like reorganising sections during the year, being able to move or replace pages can be a real advantage.
For some teachers, choosing between wiro bound and loose leaf has just as much impact as deciding between A4 and A5.
Final Recommendation
The best planner size is the one that fits naturally into your working day.
If your planner is your main planning tool and you like plenty of writing space, an A4 planner is likely to suit you better. If you spend most of the day moving between classrooms and prefer concise notes, an A5 planner may prove more practical over the course of the academic year.
Rather than focusing on dimensions alone, think about where your planner will spend most of its time. On a classroom desk, a larger format often makes sense. In a school bag, a more compact planner can quickly become the easier option.
A4 vs A5 Teacher Planner FAQs
Is A4 or A5 better for a teacher planner?
Neither is better for everyone. An A4 planner offers more writing space, while an A5 planner is easier to carry throughout the school day. The right choice depends on how you plan and where you use your planner most.
Is an A4 teacher planner too big?
Not necessarily. Teachers who write detailed lesson plans or spend most of their day in one classroom often find the additional space extremely useful. If you move between classrooms frequently, it may feel less convenient to carry.
Is an A5 teacher planner big enough for lesson planning?
Yes. Many teachers use A5 planners successfully every day. If your lesson notes are concise and you mainly record key reminders, objectives and resources, an A5 planner usually provides enough space.
What size planner do most teachers use?
There is no universal standard. Some schools and teachers prefer A4 because of the additional writing room, while others choose A5 for its portability. The best option depends on individual teaching style rather than popularity.
Is A4 better for secondary teachers?
It can be, particularly if you teach detailed lessons or use your planner extensively during planning time. Secondary teachers who move between classrooms throughout the day may prefer the convenience of an A5 planner instead.
Can I get loose leaf A4 teacher planner pages?
Yes. Loose leaf A4 teacher planners are available and are particularly useful for teachers who want the flexibility to move or replace pages as timetables change during the academic year.