The purpose of this research is for analyzing the social mobility experiences of fifteen cultural disadvantaged persons. In order to understanding the inter-relation between the factors of upward-social mobility and related national education compensatory programs, this research explores these persons’ educational experiences, personal belief about upward-social mobility, and opinions of compensatory education. This study employs semi-structured interview techniques to collect related experiences. The conclusions of the thesis are as follows: (a) The SES of our objects is not direct factors about social mobility. (b) Our objects don’t admit that educational factors are main factor could promote upward mobility. They think their achievement motivations and self beliefs are major factors. (c) Parents’ educational and economic background is shown indirect relation to social mobility. (d) Taiwan’s compensatory education programs ignore many disadvantage aspects students. (e) To abolish the public expense could not achieve the objective of so-called equity. (f) Teacher plays an important role in our objects’ upward mobility history. (g) Educational factors play regulatory role between cultural disadvantage and social mobility. (h) School and local community culture and affect students’ beliefs of upward mobility. (i) In Taiwan’s EPA outcome aspect, after-school enhancing program is evaluated positive to students’ educational achievement. in Parental educational aspect, aiming to certain objects in-need precisely and ensuring the stability of funds is important.