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Forgot non-uniform day? What to do, and how not to miss the next one
Debs · Updated 25 September 2026
The short answer
Non-uniform days (also called mufti or dress-down days) let children wear their own clothes, usually for a small charity donation such as £1. Dress-up days need a costume and more notice. To stop missing them, put the date on your calendar when the letter arrives, with a reminder the evening before, and a few days earlier for anything that needs a costume.
There is exactly one child in school uniform on non-uniform day, and they are yours. You know this because they tell you at pick-up, in detail, in front of the other parents. Or it's World Book Day, everyone else has come as a beautifully made character from a novel, and yours is a "reader" in a hastily drawn-on moustache.
Non-uniform, dress-up and themed days
They're all fun for children and all quietly admin-heavy for parents. Non-uniform days are simple: own clothes and a coin. Themed days (wear something yellow, wear red, come as a character) need a bit of planning. Dress-up days need a costume, which needs time, a shop that's open, or a very long night with a glue gun.
- Non-uniform or mufti day: own clothes, often £1 for charity.
- Themed days: wear a colour, a sports top or odd socks.
- Dress-up days: World Book Day, a class topic or a festival.
- PE days still apply: check whether they need trainers anyway.
Non-uniform day needs one reminder. Costume day needs three: buy, make, wear.
Left: for a plain non-uniform day, the only job is clothes and a coin, ready the night before. Right: for dress-up days, the job starts earlier: decide, buy or make, then wear.
Step 1: Catch the date when the letter arrives
These days are usually announced by letter, email or on the class app a week or two ahead. The moment you see one, put it on the family calendar with what's needed: "own clothes, £1" or "dress as a book character".
The mistake isn't forgetting the day. It's not realising, when you read the letter, how much time the thing needs. A coin needs one evening; a costume needs a weekend.
Read the letter as a to-do list, not as news.
Step 2: Set the reminder for when you need to act
Put the reminder when you need to do something, not when the day happens. For non-uniform day, that's the evening before (clothes out, coin in the bag). For a costume, it's the weekend before (decide and buy) and the evening before (wear it). Share it with whoever does the school run, so the child in uniform isn't a surprise to them either.
How much notice each type of day needs
A rough guide, from the letter arriving to the morning itself.
| Type of day | What's needed | When to act |
|---|---|---|
| Non-uniform | Own clothes, maybe £1 | The evening before |
| Themed | Something of one colour or kind | A few days before |
| Dress-up | A costume | The weekend before |
| Donation day | Food, toys or money | When you next shop |
Mistakes we've all made
- Reading "World Book Day" in February and remembering it the night before, in March.
- Getting the clothes right and forgetting the £1, so they're the one child without a sticker.
- Sending them in their own clothes on the wrong Friday.
- Telling one parent and not the other, who then does the school run in confident uniform.
When to let an app do it (yes, another app, but hear us out)
Debs, your own school admin assistant, reads the school's letters and emails and spots non-uniform, themed and dress-up days. The night before, each child's school bag list flags it (no more "Wear: normal school uniform" on the wrong day), a donation shows as "bring £1", and anything that needs a costume shows up in "Don't forget" days ahead. See how it works.
Questions parents ask
What is a non-uniform day?
A day when children can wear their own clothes instead of school uniform, usually in return for a small donation to a charity or school fund. It's also called mufti day or dress-down day.
How much do you give on non-uniform day?
Usually £1 or whatever the school suggests in its letter. Check the letter, as some schools ask for a food bank donation or money for a specific cause instead.
How do I stop forgetting non-uniform day?
Put it on your calendar when the letter arrives, with a reminder the evening before. For dress-up days, add an earlier reminder for buying or making the costume, and share it with whoever does the school run.