This exploratory study examined the relations among characteristics of children's home environments and two school readiness skills: their oral language and social functioning. Low SES Latino mothers of 122 (65 girls; 57 boys) preschoolers (39-49 months (M=45.00; S.D.=5.40) completed questionnaires about their family demography, their home environments, and their perceived parenting stress. Preschool teachers rated children's social functioning, and children were administered the PPVT-R (or the TVIP). Results of path analyses showed that when controlling for children's age and factors that potentially influence children's opportunities for learning, the relation between parents' literacy involvement and children's PPVT-R/TVIP scores and social functioning was mediated by children's interest in literacy. In addition, mothers' perceived parenting stress was directly associated with children's PPVT-R/TVIP scores and social functioning. The findings highlight within-group variations in the home literacy environments of low SES Latino families.