ISB is proud to be one of the few international schools to offer lacrosse as a competitive sport. Raiders Lacrosse includes girls Varsity, JV and U14 teams during the Winter Season and Boys Varsity, JV and U14 teams in the Spring season. Teams practice on the Lower Field three times a week. The teams play local Belgian clubs during the regular season and compete in tournaments. ISB hosts one of the largest youth lacrosse tournaments in Europe every May.