This dissertation will explore any associations between ADHD symptoms (exposure), educational attainment (mediator) and mental health (outcome). Previous studies have suggested that severe ADHD symptoms lead to difficulties in university life and have a negative effect on mental health. A literature review found that young people with ADHD are less likely to pursue higher education and those who do are less likely to graduate a the same time as their peers. The majority of studies conducted on this topic are based in North America and use a small sample size from a single university. A study found that the majority of individuals with ADHD have comorbid disorders such as anxiey or mood disorders. This dissertation will attempt to understand what role higher education plays in this equation: does it have a protective or harmful effect on the association between ADHD and mental health. Unlike other studies, this study uses a large UK-based sample size and isn’t focused on a single institution. It aims to assess how partaking in higher education for individuals with ADHD affects their mental health later in life.