This report, based on data collected over three years, demonstrates that students in the postbaccalaureate student-led laboratory sections perform as well on laboratory assignments as students in the graduate student-led sections when instructor demand exceeds the available graduate-student pool. Importantly, findings indicated that the postbaccalaureate-student lab instructors increased student satisfaction, as measured by teaching evaluations, and increased student interest in the subject matter. (Contains 3 figures.)