These data were used to evaluate and refine three tests of receptive vocabulary size in French, German and Spanish respectively, which were administered to primary school students aged 7-11 in England in February-March 2023 (initial test) and in January-February 2024 (revised test). There are in total six data files in Excel format, one test file in Word format (containing the revised test for each language) and one file in pdf format (containing the initial test for each language).