Complex sentence: In 2008-09 EAB was home to 35 athletic teams, clubs, and other activities, with 65 full-time teachers, 35 of whom were U.S. citizens.
Split into simpler sentences: In 2008-09 EAB was home to 35 different athletic teams, clubs, and other activities. That year the school had 65 full-time teachers, 35 of whom were U.S. citizens.