This report of a year-long writing project that involved over 1,600 junior and senior high school students concludes that students taught by teachers trained in writing as a process showed significant improvement over students of teachers who were not so trained. The report describes the goals and objectives of the New Jersey Writing Project, the personnel involved, the development of the program in three stages (teacher training, implementation and staff development, and assessment), the overall costs of the program, and evidence of the program's effectiveness, including tabular data. (AEA)