Quite frankly, I don't put too much stock in rankings. My team beat two teams that are ranked in the region over the past season and didn't get ranked. My first doubles team beat 3 of the teams ranked in the section and didn't get ranked. There is a bias when it comes to rankings. There is no straight formula. It is based on the coaches who do the polls and what schools that their teams play. Prior seasons of rankings help, meaning the name of your school.
Head Men's Tennis Coach @ Yeshiva University. Pro Kennex Ki-5(R) & Gamma RZR 98 (L)
Dunlop Black Widow 17 (63lb) Babolat N.Vy 16 (64lb) USTA 4.5.