Process planning is a central, knowledge extensive and important activityin a manufacturing company. During process planning, countless decisions are made,many times based upon the process planner´s tacit knowledge, based on years ofexperience. The knowledge gap between the expert and the novice is wide.Narrowing this gap, taking the novice towards becoming expert, is an objective ofeducation. This paper presents a solution for model-based interactive learning ofprocess planning, validated through application in master level productionengineering courses.