In addition to the conventions of standard written English, writing involves difficult choices of theme, audience, and form, as well as subtleties of style, and the teaching of writing requires active involvement of instructor and student in the learning process of each discipline. In a program involving cross-curriculum writing instruction at Beaver College, three or four liberal arts faculty members, one of whom is in English, work together in a course cluster for a semester to improve writing in their classes. They discuss ways to make writing a natural part of each class meeting and consult with each other on improving responses to student writing. Students get needed practice in writing; learn to express what they know first to themselves and then to others; learn to think and write in the special ways that humanists, social scientists, and scientists think and write when they are discovering and communicating ideas in their fields; and improve class discussions. Faculty members become more sensitive to their own similarities and differences as thinkers and writers, begin to pose questions about academic discourse and the nature of evidence in various fields, and begin to explore forms of literacy beyond the verbal. (AEA)