Dear Charlotte_mom
You're right. I just thought Mount Davis 咁山旮旯,psychologically I already mistook it as belonging to South District. Thanks for the correction.
係 wor,又衰咗添。It belonged to mid west district in my daughters' time. But I just checked the 中學一覧表 for 2013 and 2014, the places allocated to mid west and south district are roughly the same (14 ~ 15).