How to change my name in school?

my name is regina... i reallllllly dot like it. im in middle school, soem ppl call me rajinea and its totally embarassing. im going 2 my counselors soon probably next week bc shes out this week and asking her if on the attendance sheet if i could change it 2 "regeena" then next year m definitly registering myself 2 "geena" NO NOT GINA... "GEENA" so do you think they will allow changing my name from regina to regeena. 2 times in the past ive had subs ask IN FRONT OF CLASS "is it regina or rajinea" every1 laffs and i laff 2 so then its not as embarassed btu i hate it and it reallllllly brings me down. im gonna explain it 2 my counselor all that has happened and i NEED 2 change it 2 regeena. then if the school allows me, i will tell my teachers i spell it "regeena" now.