Does school-based careers education, advice, information and guidance (CEAIG) have any influence on later life outcomes? This paper reports regression analyses using 7,635 survey responses from young people in England aged 21–22. Significant positive relationships were found between self-reported CEAIG activities experienced at age 14–16 and a range of adult outcomes reported at age 21–22. Both the quantity and quality of these CEAIG activities were important predictors: the more CEAIG activities experienced at age 14–16 and the more helpful these activities were perceived as being, the more likely the young people were to report life satisfaction, positive future outlooks and feel better prepared for the future. These relationships are held after controlling for gender, ethnicity, social deprivation and school type. Young people who reported experiencing more and better quality CEAIG activities at school were also more likely to be in education, training or work at age 21–22. Findings are discussed in the light of recent legislation relating to careers support in England, highlighting the importance of ensuring that the needs of these young people transitioning into the workforce and adulthood are met.