This study investigated the reliability and validity of the new versions of the Positive Parenting Scale (E2P), a series of eight questionnaires designed to assess the frequency of parenting practices in parents of children from 0 months to 17 years of age. Participants were Chilean parents of healthy children (N = 3187) residing in an urban city of Chile. Content validity granted by independent expert judges and confirmatory factor analysis were conducted for each questionnaire. Evidence of convergent and discriminant validity with other scales was also collected. The new versions of E2P Positive Parenting Scale demonstrated robust evidence of structural and content validity, and a pattern of correlations between independent scales and E2P factors consistent with hypothesized expectations, that serve as evidence of convergent and discriminant validity. Reliability of the eight final questionnaires was good to excellent. Considering this evidence, we concluded that the new versions of E2P Positive Parenting Scale are a valid, reliable, feasible, and free access measures for assessing parenting practices in parents of children from 0 months to 17 years in Chilean families. The findings of the confirmatory factor analysis provide support to the theoretical scheme of relational, formative, protective, and reflective parental competencies on which the questionnaire is based.