I am fine here and hope you are also doing well at your place.
I want to tell you that with your blessings, my studies are going very well. Here, some of my classmates are a bit weak in their studies, for which want to spend some extra time helping them in their studies.
My friends are unable to keep tuition. That’s why I want to spend a little more time with them and help them in their studies so that I will revise and teach them all together.
I am writing this letter because this should be in your knowledge and I also want to seek your permission to help them because you always say that knowledge increases by sharing. That’s why I am writing you a letter.
I hope you will allow me to help them in their studies.
Your lovely son,
___________ (Your name)