To Incoming Freshman or non NU students

To anyone who is not a student at NU, this website is not accurate at all for Northwestern. The top 5 ranked frats according to Greek Rank aren't even active at Northwestern. Here is a legitimate ranking:
Tier 1: tie between Sigma Nu and Lambda Chi Alpha
Tier 2: ZBT, Delta Tau Delta
Tier 3: SAE and SigEp
Tier 4: Fiji

Big gap between Tier 1 and 2, small gap between tier 2 and 3