Teaching, learning, and testing are an integral parts of a successful education system. With higher education being accessible to more and more people, it becomes increasingly challenging to compare the quality of education. Testing is essential. But how do we test? And how can we compare tests from different schools, student populations, curricula, and teaching methods? National and international testing for the purpose of evaluating national standing are more and more popular. The results are taken very seriously and used to reshape national (US) education policy, shifting money, producing and selling text books, providing tutoring services, and last but not least, defining content and 'real life' importance about the things we teach our kids including science, religion, and sex.

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