In this book, the researcher examined the effect of some school related variables such as school size, type, and location to the Mathematics performance of high school students. The researcher being a teacher for ten years in a public secondary school is puzzled about the cause of low performance of students in Mathematics. She experiences public schools problem on poor Mathematics achievement and proficiency consistently. Though leaps and efforts are done to drastically create innovations and progress to the Mathematics Education in the Philippines still low scores is a dilemma. Thinking about this, and considering the scores of some schools that attained Mastery Level in achievement tests like National Achievement Test (NAT) had make the researcher theorized that there might be "some special ingredient" in these schools that made them performed better than other schools. She claimed that if other schools will align the local school policies and practices of these schools hence probable positive changes in the Mathematics performance in the country can be guaranteed.