This final report on field testing of minicourses in undergraduate biology lists the objectives, procedures, applications, and conclusions of the project in which twelve schools utilizing minicourses, developed at Purdue University, were sampled. Data were collected and analyzed on student achievement, student attitude changes, and student reaction to the minicourse materials. The data were then used to revise and improve the minicourses where weaknesses in content or approach were detected during the field testing. A scale to measure student attitudes toward biology was developed by the project staff along with an instrument allowing students to record their feelings about various aspects of the minicourse. (Author/CS)