Most common school pick
Casio ClassWiz GCSE Scientific Calculator
Secondary school, GCSE maths, and everyday scientific work
The layout is widely taught in UK classrooms, so students can follow teacher demonstrations quickly.
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Guide - Calculator Buying
Primary and Secondary School Calculators: What to Buy in the UK
For school, the best calculator is usually the one the teacher expects to see. A familiar layout saves time in class, makes homework easier to follow, and reduces exam-day surprises.
Top recommended picks
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Solar GCSE option
Casio ClassWiz FX-85GT CW
Students who want the familiar school layout with dual power
Very similar classroom workflow to the standard GCSE ClassWiz, with solar plus battery power for daily use.
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Sixth-form step up
Casio ClassWiz FX-991CW
A-level maths, sciences, and advanced secondary work
Adds deeper scientific functions such as equation solving, matrices, vectors, and distributions for older students.
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GCSE scientific calculatorsA good starting point for most secondary school maths courses.View current optionsPrimary school calculatorsSimple four-function calculators with large keys and clear displays.View current optionsA-level scientific calculatorsAdvanced scientific models for sixth-form maths and science.View current options
Start with the school recommendation
Many maths departments teach button sequences for one or two common models. Matching that recommendation is worth more than a long feature list, especially for younger pupils who are still learning the basics.
For UK public exams, check the current exam-board and centre guidance before buying anything unusual. JCQ guidance says there is no complete list of allowed calculators, and centres are expected to make sure calculators are compliant.
Primary school: keep it simple
For primary pupils, look for a large display, large keys, percent, square root, memory keys, and a hard-wearing case. Solar plus battery power is useful because it reduces the chance of a flat battery in class.
Avoid buying an advanced scientific calculator too early unless the school asks for one. Extra modes can confuse pupils who only need arithmetic, fractions, and basic checking.
Secondary school and GCSE
For KS3 and GCSE, a scientific calculator with fractions, powers, roots, trigonometry, statistics, tables, and a natural textbook-style display is the normal choice.
Graphing and programmable models can be useful later, but they are often unnecessary for GCSE and may create exam-compliance questions if they are not set up correctly.
Sixth form and A-level
A-level maths students often benefit from a more capable scientific calculator, especially one with numerical equation solving, matrices, vectors, distribution functions, and table generation.
Graphing calculators can help with visualising functions, but they cost more and need exam-mode checks. Buy them only when the course, teacher, or department genuinely supports them.
Quick buying comparison
| Student stage | Best fit | Why |
|---|---|---|
| Primary | Simple four-function calculator | Large keys, clear arithmetic, low distraction |
| KS3 | Entry scientific calculator | Fractions, powers, roots, and basic statistics |
| GCSE | Exam-compliant scientific calculator | Covers the normal calculator paper toolkit |
| A-level | Advanced scientific or supported graphing calculator | Handles deeper algebra, tables, distributions, and modelling |
Buying checklist
- - Teacher-recommended model or layout
- - Natural textbook display for fractions and powers
- - Clear fraction, surd, trigonometry, and statistics functions
- - Solar plus battery power where available
- - Protective slide-on or hard case
- - Exam-compliance guidance checked before GCSE or A-level use
Avoid
- - Phone, tablet, app, or web calculators for exam use
- - Unbranded imports with unclear manuals or poor key labels
- - CAS, symbolic algebra, or programmable features unless explicitly allowed
- - Tiny novelty calculators that are hard to read under exam pressure
Official guidance checked
Related calculators and guides
Frequently asked questions
What calculator should I buy for GCSE maths?
Start with the model recommended by the school or maths department. In general, GCSE students need an exam-compliant scientific calculator with fractions, roots, powers, trigonometry, statistics, and a clear textbook-style display.
Does a primary school child need a scientific calculator?
Usually not unless the school specifically asks for one. A simple four-function calculator with large keys is easier for younger pupils and avoids modes they do not yet need.
Are graphing calculators allowed in UK school exams?
Graphing calculators may be allowed unless a specific qualification bans them, but they must comply with the exam rules and may need exam mode. Always check the current school, centre, and exam-board guidance.