This paper describes use of the WWW to enhance assessment in the open, distance and flexible learning contexts. From their experiences as practitioners in instructional design and Web development, the authors consider effectiveness, efficiency and new opportunities in facilitating student assessment via the WWW. Discussion draws upon the body of literature in Web-based developments, open and distance learning, instructional design, research and case study data. Case studies from Australian universities demonstrate emerging practices and reflections brought about by a shift towards flexible delivery and the use of WWW technology. The dissolving of distinctions between on campus and off campus is also illustrated through case studies.