>>281636261
You can infer from the reactions of the characters in-universe that the rankings are basically like so:
>Mai 10/10
>Satsuki 9.5/10
>Ajisai 9/10, mostly praised for her personality rather than beauty
>Kaho 8/10, known to be cute but not overly praised
>Renako 7/10, can sometimes be a 8/10 depending on scenario very rarely, but used to be a 6/10 when long hair