A web-enabled computer simulation program presents real-world opportunities, problems, and challenges for aspiring principals. The simulation challenges areas that are not always covered in lectures, textbooks, or workshops. For example, using the simulation requires dealing--on-screen and in real time--with demanding parents, observing classrooms, completing personnel evaluations, coping with budget cuts, and enforcing curriculum decisions. Simulations that replicate the world of practice and that connect consequences to behavior are a next step in professional learning.