1. Introduction

The need for more women in STEM-based innovation is recognized; data from the online surveys confirms that there is now a broad consensus on the legitimacy of more women in science, technology, engineering and mathematics (STEM) both for ethical and economical reasons. More than 90 % of men and women who have answered to the survey view women as legitimate to invent, sell, install and fix technologies they use. However, closing the gender gap in STEM requires to close the data gap, which is why this report is focused on providing insights on the leaky pipeline issue, to understand the reasons for which women literally “drop out” from STEM first in education, then at work. This analysis involves looking at the evolution of the proportion of graduated women in STEM and their situation in STEM jobs.