This study determined the factors related to students' dropout as a basis for school initiated intervention among dropouts of Caninguan National High School and Panuran National High School from 2010-2014. The study used mixed-method research design. The quantitative data were obtained using the Factor Determinant Questionnaire (FDQ) and Questionnaire on Motivation (QM) which was validated and with reliability components of a =.935 and a=.901, respectively. Factor analysis was also conducted to verify the FDQ's factor loadings. To explain further the quantitative findings , the researchers conducted an interview to 10 totally dropped and 10 re-admitted respondents. Study revealed that high percentage (92.50%) of dropouts are male. In terms of distance and age,55% of them from far residence and are older than their classmates with respect to their year level. Also, 52.50% dropouts come from big-sized families.57.50% are middle children. Moreover, most of the dropouts are in middle school level (Grade 8/ Second Year and Third Year). On the other hand, dropouts have low motivation towards mathematics (M=76.60). "Poor grades","Lazy to attend class","Disciplinary problems","Missed too many days and could not catch up" and "lack of perseverance in study are the highly affecting factors of dropping out. It is in the family factor "To help family" and personal factor "Lack of perseverance in study' that male and female respondents differ in their views. Moreover, the school factors "Teachers are incompetent", personal factor "Lazy to attend class" and school factor "Teacher's negative comment' is viewed differently by respondents when classified according to birth order, family size and Mathematics motivation respectively. On the other hand, there is no significant difference between the School Attributed Factors when respondents are classified according to birth order and Mathematics motivation. Moreover, respondents when classified in to other demographic profile do not differ answers on the factors whether school, family or personal. School based intervention includes early detection of dropouts and an action plan considering factors that greatly affects the respondents. To effectively respond to the identified needs of the school dropout and a scientific handling of the most emotionally charged dropout problems, schools are encouraged to identify students at risk of dropping out early and respond to it.