To boost up your popularity in high school, you need to relate well with all students. This can be achieved by ensuring that you listen to their opinions and respect everyone for who they are. Try being social to everyone and you will soon find yourself known to everyone.
Make eye contact with people in the halls and smile a lot. Don't ignore anyone and say hi, not in a creepy way but just a "hey." And be yourself. A great proverb is, "to have a friend you must first be a friend" and that is very true! I know, I became very popular in high school and that is how I did it.