Should i do this....?

My name is Alyssa but its not the name your thinking of, Its pernounced ah-LEE-sah and Most teachers dont know that till my friends tell them because i dont bother to tell them, Next year in high school grade 9 <3 and Im thinking of not mentioning it to any of the teachers and i know whos all in my class next year and i know none of them would correct me, Should i do it? Only my parents and close friends call me ah-LEE-sah the rest of the time i get ah-LISS-ah and i answer to it and everything. Do you think i should? Yes or No? And reasons why!