This study investigated how were correlates with the parental involvement and the achievement of students in the urban and semi-urban type 2 schools in mathematics and science. The descriptive survey research design was employed to carry out this study. One hundred and ninety two (192) students from 16 type 2 schools in Batticaloa educational zone, Sri Lanka were stratified randomly selected for this study. The type 2 school was selected for maintaining the homogenous values. From the results of this study, parental involvement accounts for 26.1% of the total variance in mathematics achievement of secondary schools (R2= 0.261; p< 0.05) and 19.4% of the total variance in science achievement of secondary schools (R2 =0.194; p < 0.05). These percentages are significant at 0.05 level of confidence. It shows that parental involvement is an important predictor of mathematics and science achievement. There exists a significant difference in the parental involvement of urban and semi-urban type 2 school students (t = -8.12; p<0.05). Urban school students enjoy more parental involvement than their counterparts in the semi-urban school students. It shows that there is a correlation between parental involvement and male, female students in type 2 schools (t = -7.34; p <0.05), and also there is a significant difference in the academic achievement of male and female students in mathematics and science (t = -0.432 and, - 0.512 respectively; p < 0.05). It also shows the finding reports that, there is a significant difference in the academic achievement of mathematics and science with urban, semi-urban schools students (t = -9.142 and, -8.314 respectively; p <0.05). Teachers and Counselors need to enlighten parents on the need to personality get involved in the academic activities of their children.