This study was considered to compare the quality of texts written by students with that of experts for college composition. It analyzed the quality of texts of each twenty text of three groups; upper group and lower group of students, and experts group. This study used nine theological Analysis Tools; X1: T-unit numbers, X2: topics of sentence number, X3: whole word numbers, X4: incorrect sentence number/ whole sentence number, X5: cohesive ties number/ whole sentence number, X6: the number of thematic chunks, X7: whole word numbers/ T-unit numbers, X8: T-unit numbers / topics of sentence number, X9 the number of thematic chunks/the number of sentence theme. The result of analysis is as follows: there is no difference upper group and lower groups of students, on the other hand there is a big difference between students and experts. According to the result of Kruskal Walls test and Nonparametric Two-Independent-Sample TEST, there are big differences students and experts in X4: incorrect sentence number/whole sentence number, X6: the number of thematic chunks, X9 : the number of thematic chunks/the number of sentence theme. Experts have no incorrect sentences whereas students have a lot of incorrect sentences. the topic of sentence written by experts are connected consistently each other toward The topics of text, but students show the lack of coherent states in it. Therefore in order to write good texts, students should closely connect topics of sentence toward The topics of text.