International audienceThis study aims to identify how differing language experiences impact on the level of oral proficiency attained in the bilingual child’s two languages. Participants were 39 seven- to eight-year-old French-English bilingual children from high SES families attending an international state school in France. Detailed information on the children’s language experiences was gathered through two questionnaires, one completed by the parents and one given orally to each child.Proficiency was assessed in each language using the English and French versions of the standardised Peabody Picture Vocabulary Test, along with criterion-referenced evaluations of oral competence in each language completed by the children’s English and Fren...