Search engines have become an increasingly important educational tool. Finding information has become an easy exercise by just typing a few keywords into a search engine text-box. However, some people may not use a search engine effectively. Students may not know how to choose proper keywords. They may have difficulty in selecting the relevant information from millions of search results. In this paper, we propose a search engine system which shares search queries and browsing history among students. We call the search queries and browsing history "community search logs". This system analyzes the community search logs, and shares students' knowledge and experience to each other. Our purpose is with help students, especially those who are not good at searching, to improve their searching efficiency.