By order of the Ministry of Generations, Family, Women and Integration (MGFFI) of the Land North Rhine-Westphalia, the Institute for Social Work in Muenster (ISA) carried out an evaluation of the letters for parents. To this end, youth welfare offices and parents were interviewed. The evaluation report "Scientific Analysis of the Letters for Parents in North Rhine-Westphalia, Final Report" was issued in March, 2008. The random samples taken during the evaluation comprised the results of the interviews made in youth welfare offices and among the readers of the letters for parents.