Thematic progression can be applied as one of the techniques to analyse whether the paragraphs written are coherent or not. To this end, the present study scrutinized six English final reports written by the sixth semester students learning at an academy of secretary in Indonesia. The data originated from the six final reports were identified, parsed, analysed, and interpreted using qualitative approach with descriptive analysis related to theme and thematic progression patterns of systemic functional linguistics. Moreover, this was equipped by descriptive statistics showing the sum of data evaluated. The results of deciphering the data supported the claim that thematic progression can be administered as an alternative in seeing the coherence of students' writing work. This manifested by ninety-five percent of the paragraphs jotted down utilized thematic progressions and the clauses developed them formed theme patterns, hence they were coherent. The most encountered thematic progression was zigzag, as for the theme pattern, the unmarked topical structure dominated. These results indicated that the secretary academy students whose works investigated proven capable of writing final reports in English. From the overall findings, there are some steps to consider, especially in the field of writing final reports resides in secretarial academies. First, this study demonstrates how the theme patterns and their thematic progressions can be used as an instrument to see whether the addressed paragraphs are coherent or not. This, in turn, can assist lecturers, teachers, and instructors of language to determine whether the students need to be given some enrichment or not. Second, from this, it can be taken some measures to 'nurture' supervisors in terms of theme and thematic progression patterns before assigned to supervise the students while writing the final reports in the context of secretarial academies. Finally, the sixth semester students learning in academies of secretary can be introduced to the process of writing in which the theme and thematic progression discussion employed as the focus of the learned materials. This, at the end, might give contribution to the enhancement of their paragraph writing. [Note: The volume number (10) shown in the header of the PDF is incorrect. The correct volume number is 16.]