This study is aimed to identify how college freshman English achievement correlates to two factors of high school English achievement: high school academic records of English and CSAT English scores. The subjects were 160 freshmen who enrolled in ‘English Conversation 1’ in their first semester and ‘English Conversation 2’ in their second. Of 160 students, 143 students, the regular admission group, were admitted to the university based on their high school academic records and CSAT scores, while the remaining 17 students, the early admission group, were admitted based only on their high school academic records. The subjects’college English achievements were divided into two categories: one was class preparation (including participation, attendance, and assignments), and the other was exams including the midterm, basically a listening test, and the final, composed of writing and grammar tests. Results showed that the regular admission group’s college English achievement correlated closely with the group’s CSAT English scores and high school academic records of English while there was a lack of correlation between the early admission group’s college English achievement and its high school academic records of English.