This is the first part of a multi-part paper which discusses particular issues relating to the successful assessment of large student cohorts in Business Law subjects. This paper discusses assessment concepts, the relevance and value of multiple-choice testing in large student cohorts and the motivations of modern students. It will also assess the costs and benefits of multiple-choice assessment from the perspective of the administration of the Business Law Department at Macquarie University. Future parts of this paper will discuss statistical techniques which can determine the validity, reliability and effectiveness of multiple choice as an assessment technique before presenting an analysis of the outcome of introducing multiple-choice assessment into core subjects (each with enrolments >800 students) within the Department of Business Law at Macquarie University. Those parts will highlight the evolution of our assessment policy to reconcile two previously conflicting goals: 1) enhancing deep student learning; and 2) managing assessment within workload constraints.