This group of six surveys assesses children's attainments in a sample of English and Welsh primary and secondary schools. The children in each age group were given a battery of tests and the results related to detailed information on the schools attended and to background, biographical and personal information on each child. In the case of Welsh children, linguistic information was also included. This survey covers children in primary schools in Wales. Variables as for 60005, with the following additions: Test information also includes: a Welsh version of the Number Concept Test, and a 30 item test of Welsh Reading Comprehension similar in form and content to the English Reading Test and similarly administered. Background information on child also includes: language spoken at home, and a finer definition of parental occupation (11 categories, plus social rating). Information on the school includes: teaching language employed and number of subjects taught in Welsh.