British vs American Spelling: Which Should My Child Use?
Published 11 September 2026
Use whichever your child’s school marks. In Hong Kong, Singapore, Malaysia, the UK and most Commonwealth systems that means British spelling. In the US, the Philippines and much of Latin America it means American. Both are entirely correct English; only one will be marked correct in your child’s exercise book, and that is the practical question.
The complication is that children in British-curriculum schools are surrounded by American spelling — in games, apps, videos, autocorrect and most of the internet — so they meet the other system constantly.
The differences that actually come up
Four patterns cover most of what a primary child meets:
-our vs -or: colour, favourite, neighbour, behaviour, honour (British) against color, favorite, neighbor, behavior, honor (American).
-re vs -er: centre, theatre, metre, litre against center, theater, meter, liter.
-ise vs -ize: realise, organise, recognise against realize, organize, recognize. Worth knowing that -ize is also acceptable in British English and is used by some British publishers — this is a preference rather than a hard rule, unlike the others.
Doubled l: travelling, cancelled, labelled, marvellous against traveling, canceled, labeled, marvelous. This one follows from the doubling rule: British English doubles a final l regardless of stress; American English does not.
These four patterns account for the large majority of differences a primary child will encounter. Beyond them, individual words differ — grey/gray, tyre/tire, plough/plow, aeroplane/airplane — but they are a short list rather than a system.
What to do: teach the four patterns rather than word pairs. A child who knows -our is British can generate colour, flavour, harbour and rumour without being taught each one.
The practise/practice trap
This one catches adults, and it is not a British-American difference in the way the others are.
In British English, practise is the verb and practice is the noun: I practise the piano but piano practice. The same applies to licence/license and advise/advice.
In American English, practice covers both.
A child in a British-curriculum school needs the verb-noun distinction, which is a grammar rule rather than a spelling variant. It is genuinely harder than the -our pattern and worth teaching separately.
What to do: teach it as a sentence test. If you can put “to” in front of it, it is the verb and takes -ise: to practise, to advise.
Why your child sees American spelling everywhere
Most software defaults to American English. Most YouTube, most games, most of the internet is American. Autocorrect on a phone set to US English will actively change colour to color.
This means a child in a Hong Kong or Singapore school is reading American spellings daily and being marked on British ones. Some contamination is inevitable and it is not carelessness.
When your child writes color, they have almost certainly absorbed it from a screen rather than forgotten the lesson. Treating it as a mistake misses what is actually happening.
What to do: set devices your child writes on to UK English. It removes a daily source of interference at no cost, and stops autocorrect undoing what school teaches.
How to teach the difference without confusing them
The instinct is to avoid mentioning the other system. That does not work — children encounter it anyway, and discovering that a “wrong” spelling appears in a published book is unsettling.
A better approach is to name it explicitly and early:
- Tell them both are correct English, used in different places. Children accept this easily — they already understand that different places do things differently.
- Be clear which one their school marks. “Both are real, we use the British one here” is a complete and honest explanation.
- Teach the four patterns, so they can classify rather than memorise.
- Do not correct their reading. If a book uses color, that book is not wrong.
- Do correct their writing, without treating it as a failure. “That is the American spelling — the British one has a u” is neutral and informative.
Naming the two systems removes far more confusion than avoiding the subject does. A child who knows there are two systems can navigate both; a child who thinks there is one system with random exceptions cannot.
Which to use in exams
Follow the school and the exam board. British-curriculum exams — Cambridge, most Hong Kong and Singapore school systems — expect British spelling. Cambridge English exams generally accept both British and American spellings as correct, but consistency within a piece of writing matters, and it is worth confirming the current guidance for the specific exam your child is taking.
The rule that always holds is consistency: mixing the two within one piece of writing looks like error even where both spellings are individually acceptable.
What to do: if your child is preparing for a specific exam, check that board’s current guidance rather than assuming. Exam-specific preparation is worth getting right.
Frequently Asked Questions
Is British or American spelling correct?
Both. They are two standard varieties of English, each fully correct in its own context. The practical question is which one your child’s school and exam board expect — British in the UK, Hong Kong, Singapore, Malaysia and most Commonwealth systems; American in the US and several other regions.
What are the main differences?
Four patterns cover most of it: -our against -or (colour/color), -re against -er (centre/center), -ise against -ize (realise/realize), and the doubled l (travelling/traveling). Beyond these there are individual word differences such as grey/gray and tyre/tire, but they are a short list rather than a pattern.
My child writes “color” instead of “colour”. Is that a spelling mistake?
In a British-curriculum school it will be marked wrong, but it is not carelessness — it is almost certainly absorbed from games, videos and autocorrect. Setting your child’s devices to UK English removes a large part of the interference, and framing it as “that is the American spelling” rather than “that is wrong” is both accurate and less discouraging.
Is it practise or practice?
In British English, practise is the verb and practice is the noun — I practise every day, but daily practice. American English uses practice for both. The quick test is whether you can put “to” in front of it: to practise takes the s.
Should I change my child’s device settings?
Yes, if they write on it. Autocorrect set to US English will change British spellings as your child types, which actively undoes what school is teaching. Switching the keyboard and document language to UK English takes a minute and removes a daily source of confusion.
Do Cambridge exams accept American spelling?
Cambridge English exams have generally accepted both varieties, with consistency within a piece of writing being the expectation. Because assessment guidance is revised periodically, check the current information for your child’s specific exam on the Cambridge site rather than relying on second-hand summaries.
Will using British spelling disadvantage my child later?
No. British spelling is standard across a large part of the world, including in international business and academia, and no reputable institution treats it as an error. If your child later studies or works in the US, adapting is straightforward — the patterns are few and regular.
SpellEasy uses the word list your child’s school actually sets, so practice matches the spelling their teacher marks rather than a default from elsewhere. Download free on the App Store.