This project report describes a teacher's effort to create an online wiki for her students to use in preparing for their high-stakes English exam. The teacher created 20 wiki pages, one for each potential exam question, to provide translations of reading passages and model answers for writing, grammar, and speaking tasks. Students worked in pairs at the computer lab to contribute translations and answers. The teacher hopes the collaborative wiki platform will motivate students to prepare independently and reduce cheating. However, time was limited, and the teacher plans to invite alumni to further develop the wiki over the summer for next year's students.