Although low school performance is related to attempted and completed suicide, its relationship with suicidal thoughts has been less clear. We conducted a population-based study including 10081 individuals aged 18-29 years in Stockholm, Sweden, and found a clear positive gradient in the risk of lifetime suicidal thoughts with decreasing levels of compulsory school leaving grades. This relationship was somewhat attenuated but remained significant in multivariate models accounting for family background, severe adult psychopathology and adult socioeconomic conditions. School failure is associated with an increased risk of experiencing suicidal thoughts and may also increase the tendency of acting upon them.
Kosidou, K., Dalman, C., Fredlund, P., & Magnusson, C. (2014). School performance and the risk of suicidal thoughts in young adults: Population-based study. PLoS ONE, 9(10). https://doi.org/10.1371/journal.pone.0109958