The Women's Experiences in College Engineering (WECE) project is the first cross-institutional, longitudinal examination of undergraduate women's experiences and persistence in engineering majors. The study was funded by both the National Science Foundation and the Alfred P. Sloan Foundation and conducted by Goodman Research Group, Inc. (GRG), a research company specializing in program evaluation. The WECE project was driven by the increased funding and attention given to support activities for women in undergraduate engineering programs. Numerous studies have explored issues related to the low representation of women in science and engineering, but until WECE no research design had ever included a national cross-institutional study of the experiences of women that could statistically assess the relationship between women's persistence in undergraduate engineering programs and their participation in support activities, as well as the relationship between persistence and departmental, institutional, and personal factors. Fifty-three institutions with undergraduate engineering schools participated in the WECE project. Of these, 26 schools had formal Women in Engineering (WIE) programs. These were matched with a stratified random sample of 27 schools that did not have such programs. The average woman in our study was a U.S. citizen, white, a graduate of a suburban, public, co-ed high school, and of traditional college age. This document contains the full WECE report and findings, including appendices, tables, and instruments. Three appendixes include: (1) Selection of Participating Institutions; (2) Instruments and Protocols; and (3) Data Tables and Figures. (Contains 101 tables and 63 figures.) [This report was produced by the Goodman Research Group, Inc. For Executive Summary, see ED507394.]