Considerations include grades and academic curriculum, future educational plans, equestrian experience and dedication to the sport.
The milestone will take place at CHI Geneva, which is celebrating its 100th year; a series of commemorative activities will be held.
Ward and High Star Hero celebrate a milestone victory at Tryon, with Christian Kukuk taking second and Mark Bluman third.
The Belgian rider piloted Kiliman Sitte to the historic win over Italian course designer Uliano Vezzani's track as the tour wrapped in El Jadida.
Erynn Ballard delivers the only sub-40-second round of the jump-off to secure victory for the team; Northern Lights take silver and Team KPF bronze.
World #1 Richard Vogel piloted Diatasio to victory in the $181,170 5* Qualifier, with Nicholas Dello Joio second and Shane Sweetnam third.
Kara Chad is 2nd in the CSI3* Grand Prix, while Alexia Trapp takes the 1.40m Bronze Tour Final at the Autumn MET I at Oliva Nova.
Aboard EIC Up Too Jacco Blue, the Austrian rider claimed a thrilling victory at the Agria Oslo Horse Show in Norway.
The Highlands Cup featured the $200,000 Major League Show Jumping Team Class, and MLSJ's 50th 5* Grand Prix, a $340,000 class.
The show jumper was driving in Valencia, Spain, when he struck and killed a 20-year-old motorcyclist; the accident is being investigated.