This study examined the linguistic lives, as well beliefs about multilingualism, of 422 secondary school students (ages 11–16) in Lincolnshire, England. The data were collected using questionnaires, replicating Haukås et al.’s (Haukås, Å, A. Storto, and I. Tiurikova. 2021. “Developing Validating a Questionnaire on Young Learners’ Multilingualism Multilingual Identity.” Language Learning Journal...