In the summer of 2017, we conducted a study to measure the impacts of compulsory education on SWB as well as on other behavioral measures. We surveyed 2,700 individuals born within three years of the cutoff date for the change in compulsory education, that is, who were born between 1954 and 1960. We confirmed the finding that there is a positive correlation between education attained and SWB. Individuals who had on average more education, reported to be more satisfied with their lives (p-value=0.0001). However, once we use the cut-off date as the source of variation in education, things look different. Individuals who were born after the cutoff date (and hence were more likely to stay in school for one year longer) reported lower levels of SWB (p-value=0.0004). We also found that the negative impact on SWB was concentrated among men: being induced to stay longer in school was associated with a 0.49 points lower SWB (on a 10-point scale) for men and 0.15 for women. In this study, we aim to collect evidence that sheds light on “the mechanisms” through which the reform may have affected SWB. The list of such mechanisms is derived as much as possible on the literature on the determinants SWB. Below, we describe the list of hypotheses that we have gathered and how they relate to the questions we ask in this survey Our target sample consist of adults who were born between September 1, 1954 and August 31, 1960, who finished their full-time continuous education at age 16 or younger and they studied in England when they were 14.