The present study examines the ways Chinese high school EFL learners organize information in their writing. A class of 50 students at grade 9 from a local high school in Guangzhou, China, were recruited as participants. The students' writing at grade 9 was collected as a corpus, comprising ten writing tasks from different text types. In order to gain a holistic understanding of the organization of information in student writing, the analytical framework of Theme at three levels -- that is, clause, paragraph, and text -- from Derewianka and Jones (2010) was adopted. Findings show that the students have varying degrees of control over information organization at different levels. In particular, the students are not proficient in organizing information at the paragraph level. Findings also show that registerial differences affect the organization of information. The study provides relevant pedagogical implications and recommendations for this group of learners.