Henriette Tolstrup Holmegaard is an associate professor at the department of science education, University of Copenhagen. She holds a Ph.D. in Higher science education. Her research centers on students’ transitions, choices and identity-negotiations in relation to science and engineering across the educational system. Currently Henriette work dedicated on researching the inequalities that transcend science practices, cultures and spaces within different science disciplines from an equity perspective. Together with Louise Archer, Henriette was the co-founder of the ESERA special interest group in Science Identities. She has been engaged in NARST committee work and served as an associated editor of the journal JRST. Henriette is a key figure in forming a community for science identity researchers within science education. This book is a result of bringing different researchers within this field together.Louise Archer is the Karl Mannheim Professor of Sociology of Education at University College London and is co-chair of the Centre for Sociology of Education and Equity. She holds a PhD in Social Psychology. Her current research focuses on STEM educational identities and inequalities, particularly in relation to gender, social class and 'race'/ethnicity, across formal and informal learning settings. Louise has authored 100+ publications, including books and journals articles. She has worked extensively with STEM teachers and informal learning educators to support equitable STEM practice, for which she has been awarded a number of prizes. Together with Henriette T Holmegaard, Louise has was the co-founder of the ESERA special interest group in Science Identities.