The introduction of Computing fundamentals in primary and secondary education has been defended, mainly, by researchers and academics in Computing and Education. In this article, we propose to expand this field by developing an interdisciplinary partnership between Computing and Psychology, seeking benefits both for the school community and for the university community. For this, we discuss some references to build a common bibliography and we analyze curricular guidelines for undergraduate courses in Computing and Psychology. In addition, we present some joint actions articulating extension, teaching and research, organized around the theme of developing computational thinking in schools.