How to Write WAEC Formal and Informal Letters Without Mixing Tones

2026-06-04 · 9 min

Address, greeting, purpose paragraph, and the slang that sinks a formal letter.

Formal and informal letters fail in the costume change: WhatsApp in a letter to a headteacher, or a council-minute voice to a sister. Layout, greeting, purpose paragraph, and close have to stay in one register. Mix them and the marker spends energy deciding what you thought you were doing.

One audience per page

Know the type before you write an address. Informal letters go to people you would actually write to as a friend or relative: a sister, a classmate, a parent. Formal letters go to offices and roles: a principal, a chairman of a local council, the editor of a newspaper, a works manager. If the question gives you your friend it is informal. If it gives you a title and an organisation, it is formal. Circle that before you draw the address lines.

Layout is not optional decoration. Informal letters usually need your address, a date, a greeting that matches the person, a body, a complimentary close such as Yours sincerely, and your first name. Formal letters need your address, the date, the recipient's designation and address where the question expects it, a formal greeting, a heading or subject line if your teacher has trained you to use one, a body, Yours faithfully or Yours sincerely according to whether you named the person, and your full name. Learn the version your school marks, because small layout habits vary; what does not vary is consistency and formality matching the audience.

The first paragraph of the body should state the purpose without a long weather report. I am writing to complain about the blocked drain in front of our classroom block is a purpose. How is the family? I hope this letter meets you well belongs in informal writing, and even there it should be short. Formal letters that spend half a page on greetings look like the writer is stalling.

Middle paragraphs do the work: one complaint with evidence, one request, one suggestion; or, in an informal letter, the news the question asked you to tell, in an order a reader can follow. Give details that could be checked: days, places, what you already did. Vague misery about an appalling situation is weaker than the drain has stood for two weeks and mosquitoes gather there after rain. Specifics are not rudeness. They are usable information.

Tone is where slang sinks a formal letter. Do not use chat abbreviations, emoji descriptions, insults, or jokes about the official. Do not call the principal bro. Do not threaten. Firm and polite beats loud. Informal letters may use contractions and friendly asides, but they should still be written in sentences. Exam informal is not the same as a voice note. You are still showing control of English.

Two tasks in one prompt

Closings must match. A formal letter that ends Love from has lost the costume. An informal letter to your brother that ends Yours faithfully plus a surname sounds like a parody. After the close, the name should match: first name for a friend, full name for an official. If you are writing as a class prefect, your role can sit under the name in a formal letter.

Practise pairs on the same topic to feel the contrast. Write to your friend about a school festival, then write to the principal suggesting how to improve the next festival. Same facts, different address, greeting, vocabulary, and close. The pair drill trains the switch the exam will ask you to make without warning.

Common mixes appear every year. Informal greeting on a letter to an editor. Formal heading on a letter to a cousin. Slang in a complaint to a district office. A purpose paragraph that never names the purpose. A letter that answers only half the question because the prompt had two tasks, such as tell him about the event and advise him. Underline every task.

Time the letter as a whole. Ten minutes to plan tasks and tone, twenty-five to write, five to check layout and the two or three places tone usually slips: greeting, first paragraph, closing. Checking is where you delete a chat word from a sentence you did not notice you had written.

Read good examples from your textbook for layout, then put them away and write from a blank page. Copying a sample letter about a different topic produces the wrong details and a stiff voice. The marker has seen that sample too.

If you are unsure whether a word is too casual, replace it. Kids can become children. Stuff can become equipment or the real noun. Wanna cannot appear. Formal does not mean stuffed with huge words. It means restrained, specific, and respectful.

A letter the examiner can mark quickly has a visible audience, a visible purpose, paragraphs that each do one task, and a close that stays in costume. Mix the costumes and the marker spends energy deciding what you thought you were doing. Keep the two registers in separate drills so the hall cannot mix them for you.

Underline every task in the prompt. Write the letter once as the recipient. If a principal would hear a playground joke, or a sister would hear a minute of a meeting, the costume has slipped. Change greeting, verbs, and close until only one audience could own the page.