The Lansing Community College (LCC) Math Lab offers two arithmetic and two developmental algebra courses and provides a placement and proficiency testing program for the mathematics department and for other selected departments in the college. Students who participate in Math Lab courses: (1) take a placement test and/or have a placement interview with a lab instructor to settle on which course to take; (2) complete the course handout exercises, review them with a lab instructor, and receive first practice test; (3) begin work in textbook using study guides or assignment tables; (4) attend weekly lecture if enrolled in one; (5) come to lab instructor for help on materials or problems as needed; (6) review for and take self-administered practice test; (7) when ready, request the post-test and take it in the Math Lab testing area; (8) move on to next test if post-test score is at least 75%, or complete review assignments if score is lower; and (9) receive final grade. Information about all test results is entered into a computer-managed instruction (CMI) system. The CMI facilitates formative evaluations of course design and curricula, and the tracking of student success rates by student characteristics and placement test scores, and of course evaluations. Fourteen graphs displaying evaluation data are presented. The paper concludes with some brief comments on the networks and resources that seem to be available to professionals in developmental mathematics education. (EJV)