Generally speaking, expensive houses are usually assigned to good schools and cheap houses are assigned to bad schools. Multiple elementary schools feed into a single middle school, and multiple middle schools feed into a single high school. Consequently, a house in an expensive pocket that borders a low-income area (e.g. Tierrasanta) will probably have a good dedicated elementary and a bad high school. Conversely, a house in a low-income hispanic part of Poway could be assigned to a rank 7 elementary and rank 10 middle/high schools.