The School Admission System (SAE, the Spanish acronym for “Sistema de Admisión Escolar”) was recently implemented in Chile to mitigate the market logic in school admission. This system represents a drastic change in how families select schools. The following study analyzes the relationship between the sociodemographic characteristics of parents, their consumption of information, and their attitudes toward the SAE. A latent class analysis and a multinomial logistic regression model used data from a survey administered to parents. Three attitudes toward the SAE were identified: positive, neutral, and hostile; those attitudes have been influenced by several factors, including region of residence, socioeconomic group, and the quantity and objectivity of consumed information.