I decided to copy from the boys side (by Futbol (soccer))

Futbol was looking at who had the toughest schedule of the ranked teams as of April 17 and decided to base it on the record of the opponents as shown at the bottom of each school's site. W% calculated as follows W/total games.

Here is the Girl's ranking using same calculation:

RANK 4A School W%
11 Byrnes 66%
8 Mauldin 65%
13 Irmo 63%
4 T.L. Hanna 62%
6 Dutch Fork 62%
3 Lexington 62%
1 Wando 60%
10 Spartanburg 60%
2 Dorman 58%
9 South Aiken 58%
14 Summerville 57%
7 Spring Valley 54%
12 North Augusta 50%
5 Fort Mill 47%
15 Nation Ford 41%

RANK 3A SCHOOL W%
1 Riverside 65%
10 Myrtle Beach 64%
6 Eastside 63%
5 Hilton Head 62%
4 J.L. Mann 60%
8 Chapin 60%
3 Brookland-Cayce 55%
7 Dreher 55%
14 Socastee 54%
12 Swansea 53%
9 Daniel 51%
15 N. Myrtle Beach 49%
11 Greenville 49%
2 Airport 47%
13 Blue Ridge 46%

RANK 3A SCHOOL W%
1 Riverside 65%
10 Myrtle Beach 64%
6 Eastside 63%
5 Hilton Head 62%
4 J.L. Mann 60%
8 Chapin 60%
3 Brookland-Cayce 55%
7 Dreher 55%
14 Socastee 54%
12 Swansea 53%
9 Daniel 51%
15 N. Myrtle Beach 49%
11 Greenville 49%
2 Airport 47%
13 Blue Ridge 46%