This study is a correlational-comparative research based on the self-assessment of mothers of Grade lll pupils which sought to determine their beliefs, values, and attitudes towards parental involvement in the education of their children. A researcher-made questionnaire was administered to three hundred seventy-one (371) respondents in forty (40) elementary schools in Valenzuela City. The results showed that most of the mothers were 31 to 40 years old with three to four children, college level, married, and unemployed. The school activities they commonly attended were Nanay-Teacher Parenting Program, PTA meeting, and Class Advisers’ meeting. As to the beliefs of the mothers on parental involvement, the average numerical rating of 3.395 was interpreted as “Strongly Agree.” The values of the mothers on parental involvement had an over-all numerical rating of 3.268 with a verbal interpretation of “Strongly Agree” while their attitudes on parental involvement in the education of their children had an over-all numerical rating of 3.270 interpreted as “Strongly Agree.” Age, number of live children, highest educational attainment, and attendance in school activities were found to have significant relationship with the mothers’ beliefs, values, and attitudes towards parental involvement in terms of child performance in school, parent-child relationship, mother’s ability to personally help the child, and parent-teacher/ school relationship. The mothers differed on their beliefs in parental involvement when grouped according to age and highest educational attainment. Likewise, they differed on their values and attitudes towards parental involvement when grouped according to age.