Dear frnd (or name of ur frnd),
How r u doing? I m having a great time time here . I hope dat u and ur family r doing good there.
The independence day was celebrated (name of school). We woke up to sing Tagore songs. At 6:00 am we assembled on the playground. Our teacher gave us an inspiring. (Add some more events/information). It was a lot of fun and I wish dat u were also with me. Plz give my regards to ur family and frnds.
Your best frnd,