One of the reasons is becos of the campus. It's a lot more spacious, so children get more space to run around. Also it has more open air space, it's outdoor just outside the classroom so children get fresh air instead of recycled air conditioned air. Shatin campus is underground so they're always in an air conditioned room unless they have sports.
But most importantly, Kowloon Tong offered me an AM place...... lol