With the project Professional Development Through Increased Social Capital, Sund upper secondary school wants to enhance the staffs' professional development in the fields of action research, teaching of History, natural sciences, arts and multimedia. The objective is to facilitate the school to reach its aim of progressive schooling and learning that will make students more able to participate in a modern and an international environment. It is also the aim to enhance the staffs´ professional development to make them more able to actively participate in the transformation process of implementing a new school curriculum with assignment based learning in the foreground and to utilize the new classrooms for natural sciences, arts and multimedia in the new building extension of the school that will be opened in the autumn 2015 when the new school curriculum will be implemented. Three teachers from the action research group of the school intent to participate in an international conference of CARN in November 2015 in Braga in Portugal. There they will introduce the work of the action research group and their action research projects, learn about various international projects about teaching and learning and increase their competence of the research method of action research. Two history teachers intend to participate in the annual conference of Euroclio, the European Association of History Educators in March 2016 in Belfast, Ireland. The emphasis will be on learning from experience and facing difficult past and teachers from all over Europe will introduce their work, new methods in teaching and new teaching materials. It is very important for teachers to have an opportunity to learn about international trends in their professional field and make connections with European history teachers. Three teachers and one school-leader will attend the BETT conference in London in January 2016. They will learn about new methods and technology that will enhance their competence to introduce new technology in the new classrooms for natural sciences, arts and multimedia in the new building extension of the school. All of the participants in the project, Professional Development Through Increased Social Capital will increase their competence in their professional field, increase their open mindedness, increase their language skills and create international connections with possibilities of further cooperation. The project provides new opportunities for professional development and enhances job satisfaction. The participants will introduce the results and their experience of the training courses to all staff members of the school and through that the project will produce a more competent staff to participate in the changing process within the school and enhance professional practice that again will lead to more competence and better achievement of the students.