Word NotebookThank-you words for teachers: 20 English phrases
In this post
To thank a teacher in English, keep it short and specific: say what they did and what it changed for you. Thank you for believing in me fits almost any card; Thanks for all the extra help after class works because it names something real. Below are 20 English phrases for Teachers' Day, from casual to formal, with a note on when each sounds natural.
What is World Teachers' Day?
World Teachers' Day is held every year on 5 October. UNESCO has celebrated it since 1994, on the anniversary of the 1966 ILO/UNESCO Recommendation concerning the Status of Teachers, a set of standards for teachers' rights and working conditions that turns 60 in 2026. Some countries also have a national teachers' day on another date; these phrases work then too.
Short thank-you lines (card size)
Replace anything in square brackets with your own details.
| Phrase | Tone | When to use it |
|---|---|---|
| Thanks for everything this year. | Casual | End of the school year |
| You made [maths] my favourite lesson. | Casual, warm | A student's card; name the subject |
| I finally get [fractions], thanks to you. | Casual | get here means "understand" |
| Your class was the best part of my week. | Casual, warm | Pupils or adult learners |
| Thanks for all the extra help after class. | Casual | When the teacher gave up their own time |
| You explained it until it clicked. Thank you. | Casual | Clicked means "suddenly made sense" |
| Thank you for never giving up on me. | Warm | After a hard year; only if you mean it |
| Thank you for believing in me. | Warm | Any card; safe and heartfelt |
| I learned so much from you this year. | Neutral | Any card, from any age |
| Happy Teachers' Day, and thank you for all you do. | Neutral | On 5 October itself |
| Thank you for your patience and encouragement. | Neutral | From a student or a parent |
| You made [Leo] feel welcome from day one. | Neutral, warm | From a parent after a school move |
| We really appreciate the time you give to every student. | Neutral | From parents or a whole class |
| Your lessons made a real difference to me. | Neutral, warm | A note or a short speech |
| I'll always remember what you said about [mistakes]. | Warm | A longer note; add their advice |
| Thank you for your guidance throughout the course. | Formal | An email to a lecturer, tutor or supervisor |
| I am very grateful for the time and effort you put into our lessons. | Formal | An email or card from an adult learner |
| On behalf of the whole class, thank you for an inspiring year. | Formal | A class card or a short speech |
| Your support has meant a great deal to me. | Formal, warm | A letter to a mentor or a former teacher |
| Please accept our sincere thanks for your dedication. | Very formal | A speech or a letter from parents |
Longer notes: 3 templates
Each follows one pattern: thank the teacher, name one specific thing, say what changed.
From a student (casual)
Dear Ms Patel,
Thank you for a brilliant year. I used to hate speaking in front of the class, and now I actually put my hand up. That's thanks to you.
Happy Teachers' Day,
Sam
From a parent (neutral)
Dear Mr Okafor,
Thank you for everything you have done for Leo this year. He comes home talking about your science lessons, and he is far more confident than he was in September.
Best wishes,
Anna and Tom Fischer
To a lecturer or tutor (formal)
Dear Dr Lim,
I would like to thank you for your guidance throughout the module. Your comments on my essays showed me where my arguments were weak, and I have used your advice in every assignment since.
Kind regards,
Maria Costa
Words beyond "teacher": tutor, lecturer, mentor
The right word depends on where someone teaches; using it shows you paid attention.
| Word | Who it means | Example |
|---|---|---|
| tutor | A private teacher for one student or a small group | My chemistry tutor comes every Tuesday. |
| lecturer | Especially in the UK, someone who teaches at a university or college | Dr Lim is a lecturer in economics. |
| professor | UK: a university teacher of the highest rank. North America: a university or college teacher | Professor Adams supervised my final project. |
| mentor | An experienced person who advises you over time | My mentor helped me through my first year as a nurse. |
| headteacher / principal | Head of a school (headteacher is British, principal American) | The headteacher read our cards out in assembly. |
Formal or casual? A quick guide
- Greeting. Hi Ms Patel is casual; Dear Ms Patel suits both a card and an email. British English writes Mr, Ms and Dr without a full stop, American English with one (Mr.).
- Name. Use the title and surname unless your teacher asked for their first name; in the UK and the US, students rarely say just Teacher.
- Contractions. I'm and thanks sound relaxed; I am and thank you sound more formal.
- Sign-off. Best wishes on a card, Kind regards in an email, Yours sincerely in a formal letter.
Frequently asked questions
Is "Happy Teachers' Day" correct English?
Yes. Happy Teachers' Day is natural in a card or a message, especially with a short thank-you after it: Happy Teachers' Day, and thank you for all you do. The apostrophe goes after the s, because the day belongs to all teachers.
What can I write to a teacher I don't know well?
Choose a short, neutral line: Thank you for your patience and encouragement or I learned so much from you this year. Skip heartfelt lines such as Thank you for never giving up on me; without a real story behind them, they sound odd.
How do I thank a teacher in an email?
Keep it to three or four sentences. Start with Dear and the teacher's title and surname, thank them for one specific thing, say how it helped you, and close with Kind regards and your full name, as in the lecturer template in this post.
Sources
- UNESCO, World Teachers' Day: unesco.org/en/days/teachers (checked 30 September 2026)
- Oxford Learner's Dictionaries (tutor, lecturer, professor, mentor, principal): oxfordlearnersdictionaries.com (checked 30 September 2026)
Every phrase and example here is our own. See how we write and check our posts.
Written by the small team behind Word Notebook (Dil Defteri). How we write these posts and where to report a mistake is on the About page.
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