I went to STAB through middle school and hated it. The teachers were good, but you can get a wonderful education elsewhere without the attitude of the students, families, and administration. I lost so much confidence at STAB and have only recently gained it back. Do not send your child there. I repeat: Do Not Send Your Child There. Unless you want to see your kids' social skills and self-worth crumble before you.
This is more country club than school. The social pressures on both kids and parents are hard. Money, not character or achievement or effort, dictates social standing. There are the "in crowd" and the "rest" (and this applies to both parents and kids), and woe betide if you are not "in". The lip service paid to cultural diversity is just political correctness. There is a specific profile for kids (and parents) who succeed here, and anyone outside that feels a nagging sense of pressure to conform. The self-congratulatory atmosphere is distasteful. The facilities are beautiful, but there is a sense of entitlement here (in both the parents and the kids) that I think sets students up for difficulties later in life.