個人人力資本的形成,除了來自家庭教育、學校教育之外,也包含體制外教育以及進入職場後的職業訓練。但過去文獻大多只對家庭教育或學校教育的影響進行研究,較少探討體制外教育的影響。本文利用動態資料庫中的1953至1964年出生及1964至1976年出生的樣本,依行職業、部門別進行分類,觀察父母與手足的人力資本外溢影響,以及有補習的情況下對家庭人力資本外溢效果的衝擊。從本文的實證結果發現,體制外教育會破壞家庭內的人力資本傳承,會削弱家庭內的外溢效果,意味著提升較低家庭的翻身機率。 This study examines the effects of cramming school on family members''s human capital spill-over. An individual''s human capitals are accumulated from family, school, informal school, and job, but fewer studies investigated the effects of informal schools, which may occupy most of young''s growth time. In this study, we use the data of the generations in 1953 to 1964 and 1964 to 1976 from Taiwan Panel Study of Family Dynamics to examine the effects by categorizing their industries, occupations, and sectors. The empirical results show that the cramming school decreased the spill-over effects in family. It implies the social mobility of lower education family would be increased with the popularized cramming schools.