This book is a collection of scientific and practice orientated papers that can be acknowledged from four different angles: gender and teachers, teaching approaches, labor market outcomes, and sexual education. Additionally, the book describes the European project known as 'EDGE: Education and Gender.' A key aspect of the project was testing curriculum material, developed by the EDGE group, to be used in single and co-educative class groups to find the effects of single-sex education on motivation. The results of this randomized experiment within secondary education are also included in the book. .One of the articles in the book is about enriching excellent boys and girls in the Netherlands.