The availability of evening and weekend baccalaureate degree credit courses and factors that discourage institutions from introducing or expanding such courses were investigated through a fast response survey that was sent to a national sample of universities and other four-year colleges. Among the findings are the following: almost three-fourths of the baccalaureate degree-granting institutions offered degree-credit courses in evening or on weekends during the 1979-80 academic year; evening courses were provided most frequently; an estimated 20 percent of all institutions offered enough evening and weekend courses to fulfill all degree requirements in at least one of the 11 major fields of study covered in the survey; for specific fields of study, the proportions of institutions providing all required credits in evening or weekend courses ranged from one percent for home economics to 25 percent of business and management; and next most widely available degree programs were in the fields of psychology and social sciences; opportunities to earn degrees through evening or weekend study tended to increase with enrollment size; and insufficient demand was perceived as the major deterrent to the introduction or expansion of evening and weekend courses (limited faculty resources ranked second as a deterrent, and neighborhood or transportation safety was the least frequently cited factor). Additionally two-thirds of the institutions with evening or weekend courses provided evening classes only, while one-third offered classes both in evenings and on weekends. A sample questionnaire and information on the survey methodology are appended. (SW)