MileSplit Staff May 08, 2026 PRO See the rest of this article Access the complete article with MileSplit PRO. Subscribe to keep reading Already a subscriber? Log in. Improvement Rankings: Top Illinois Girls High Jump marks compared to their season’s best performances from 2025. Most Improved - High Jump Comparing 2026 season to 2025 season Rank Improved Athlete/Team Class 2025 PR 2026 PR 1 +4' 7.75" Jazzy Clark Bartlett 2028 0-04.00 4-11.75 2 +3' 9.00" Julie Clark Wheaton-Warrenville South 2029 0-03.00 4-00.00 3 +9.00" Peyton Larsen Elmhurst (York) 2027 4-02.00 4-11.00 4 +7.75" Ivee Loggins Joliet (West) 2028 4-06.00 5-01.75 4 +7.75" Serena Bauer Winnetka (New Trier) 2027 4-04.00 4-11.75 4 +7.75" Kate Simmons ...