The subjects of this study are 575 teachers of After School Alternative Program in Tainan City. By doing survey, it aims at investigating those teachers¡¦ perspective of the causes of the underprivileged students¡¦ low achievement, the remedial teaching method and the outcomes of remedial teaching. The results will offer suggestions for the future study and the remedial teaching teachers¡¦ training held by the education administrative organization. According to the outcome of the study, the conclusions are as followings. 1.Most of the After School Alternative Program teachers attribute the causes of the underprivileged students¡¦ low achievement to students¡¦ personal factor. 2.The After School Alternative Program teachers agree with the remedial teaching method and consider ¡¥teaching strategy¡¦ as the most important. 3.Most of the After School Alternative Program teachers agree with the effect of the remedial teaching and think that ¡¥teaching development¡¦ affects the outcomes the most. 4.The teachers with different experiences, different education backgrounds and from different school scales have different opinions of the causes of the underprivileged students¡¦ low achievement, the remedial teaching method and the outcomes of remedial teaching. 5.The After School Alternative Program teachers think that the remedial teaching method positively affects its outcomes.