Reading and writing difficulties and dyslexia affect how a student performs at school and, thus, their future lives (Borodkin & Faust 2014). This has been known and researched for the past decades (Fletcher 2009). Considerable studies have been carried out regarding dyslexia and first language acquisition, though dyslexia in second language is comparatively underrepresented. This underrepresentation, in turn, means that dyslexia and second language is less researched, and consequently, less known. This is problematic as there is then less knowledge on how to help students with dyslexia in a second language. This case study investigates how an upper secondary school in Sweden works with defining and diagnosing dyslexia, and which provisions students with dyslexia receive. To answer these questions the Head teacher, Special Needs Education teacher, English teachers and a dyslexia test analyst have been interviewed. The results showed that dyslexia is described differently by the people interviewed, it is diagnosed with a software called LOGOS and the provision depends on the student having (or not having) a diagnosis. The conclusion is that English teachers and special needs teachers must work closer together. It is therefore suggested that cooperation between the teachers and special needs department should put each student in the centre and develop methods and strategies based on the individual student. It is hypothesised that the school has many unidentified students with dyslexia and in those cases additional adjustments in the classroom are vital. This would allow the student a better chance of performing according to their abilities in school and thus expanding the limits of their world ensuring they become fulfilled, employed democratic citizens.