Engineering in other disciplines proceeds through some general phases. Each phase requires specific skills from the engineer and specific tools. The first phase is invention where something new is created and played with until its value is demonstrated or it is abandoned. The new invention is very unreliable and often will only work for the inventor, much like most educational innovations. The engineer must have the original idea and facility with the topic matter. In the next phase, general engineering, the engineer uses broad instruments to characterize his new invention and begin to optimize it. Perhaps the engineer looks at fuel efficiency and breakdown rate. The invention becomes better understood and more reliable. The general analysis will take the engineer only so far, eventually the engineer begins to notice that modifications that improve one system degrade the performance of another system. In the last phase, scientific engineering, the invention is completely modeled and understood. The engineer can then take the invention to the limits of its theoretical performance. Our test case for educational engineering, University Physics II, has finished the general engineering phase, and scientific characterization is underway.