In terms of life satisfaction there was some evidence of a social gradient, with fewer year 6 children from less affluent families reporting high life satisfaction.
O ran boddhad bywyd roedd peth tystiolaeth o raddiant cymdeithasol, gyda llai o blant blwyddyn 6 o deuluoedd llai cyfoethog yn adrodd bodlonrwydd bywyd uchel.