Write a farewell letter of thanks to the headmaster of your school informing him that you have secured a good job and thanking him for all that the school has done for you.
18, Miller Ganj,
November 13, 20XX.
It will give you genuine pleasure to know that within about a year after passing the matriculation Examination, I have secured a job as a cashier in the B.S. Bank, Ludhiana. I shall get Rs. 250 as my basic pay and Rs. 125 as D.A. per month. It is all due to your earnest efforts towards making our careers.
I shall be failing in my duty if I do not offer my most heartfelt thanks to you in this farewell letter for all that you and the illustrious teachers did for me. I am what I am due to my school. You gave me the best in you. The staff spared no pains to mould our habits and character and make us good citizens. The discipline that we learnt in the class-room and on the playground will stand us will serve us as beacons of light. Your occasional words of advice and encouragement shall light our path in life.
The school has conferred upon us unforgettable boons. We feel overwhelmed with the deep debt that we owe you. We can never repay your kindness.
I have no words to thank you adequately for all your kindness and personal interest in me.
Your most obedient pupil