The "21st Century Skills" develop rapidly skills in primary and secondary education that you "still" to master "to generic competencies that develop into the standard. Briefly, these competencies are: Creativity, Critical Thinking, Troubleshooting Skills, Communicate, Collaborate, ICT skills, Media Literacy, Information Literacy, Social and Cultural Skills and Self-Regulation. How can this now be measurable? One approach could be to integrate these more general competences of the existing concrete core objectives, as set by the government. At present there are 7 fields of knowledge: Dutch, Foreign Languages, Computing and Mathematics, Man and Nature, Man and Society, Arts and Culture and Exercise and Sport. This integration can then actual learning outcomes are formulated, which are interchangeable between the schools. That is conditional formal measurement, which is important for checks and balances and that students, teachers, school administrators and parents at some certain times know where the student is. Equally important is precisely the continuous tracking of individual students these results are increasing.With meaningful dashboards can then "21st century" learning and teaching methods are continuously evaluated. How would that be for students, teachers and parents? Formal review and evaluate the indivuele growth of students can not do without each other when it comes to optimal personalized education.