The investigation deals with the difficulty of linking diagnostics and special education help (and to look on it as a unity). This problem must be solved to identify the type of learning impairment and offer special educational services. For this purpose the authors develop and test a programme which lasts several months. The child stays in his or her primary school class. So he or she will get special help and will be supported by the class teacher and the special education teacher, who are closely working together. The application of the strategy was tested with 28 schoolchildren, who have problems and impairments in learning, in their language and in their emotional and social development. The study is based on controlled qualitative and quantitative individual cases in which the mental, physical and learning development is analyzed. Using this strategy, the complexity and individuality of the development as well as special education needs of every child could be shown. With the help of a meta-analysis, the authors found out general and relevant factors for a diagnosis, an individualized education plan and special educational services. From these factors, a model for diagnose and special education needs was derived.