尊敬的校长英文

Dear Principal，I am a senior.My name is Lihua. Recently I found some students used cellphones in the classroom, which seriously affected our study.

honorable president

Respectful headmaster, I am a senior student, my name is Lihua, I have discovered that some students used mobilephone in the classroom, which influences our study seriously!

Dear schoolhead,I'm Li Hua, a student of senior Grade three, I found that some students used cellphone in the classroom recently, it has affected our study.