Mississippi High School Activities Association The place for high school sports in Mississippi *Times were adjusted for 2020
| Women | Men | |||
| Class II | Class I | Class I | Class I | Class II |
| 2:28.23 | 2:36.82 | 200 Medley Relay | 2:29.50 | 2:18.15 |
| 2:33.89 | 2:49.30 | 200 Freestyle | 2:48.04 | 2:24.49 |
| 2:53.19 | 3:26.18 | 200 Individual Medley | 3:04.69 | 2:41.85 |
| 31.80 | 33.36 | 50 Freestyle* | 30.08 | 27.60 |
| 1:17.69 | 1:40.44 | 100 Butterfly | 1:35.18 | 1:12.19 |
| 1:10.55 | 1:17.72 | 100 Freestyle* | 1:12.61 | 1:03.17 |
| 6:51.79 | 7:34.93 | 500 Freestyle | 7:30.59 | 6:29.49 |
| 2:09.99 | 2:32.99 | 200 Freestyle Relay* | 2:07.99 | 1:52.60 |
| 1:18.29 | 1:34.60 | 100 Backstroke | 1:33.59 | 1:13.59 |
| 1:29.39 | 1:46.60 | 100 Breaststroke | 1:39.63 | 1:22.59 |
| 4:45.56 | 5:25.91 | 400 Free Relay | 4:55.37 | 4:18.52 |
