sentences:  In 2010, it was estimated by the Finnish immigration service (Migri) that a majority of all Somali refugees arriving in Finland were illiterate due to the Somali Civil War having destroyed the opportunities for those born after the 70s to attend the school system.A 2012 "Terveyden ja hyvinvoinnin laitos" (THL) survey of Somalia-born immigrants in Finland found that, prior to their arrival, around 50% of males and 50% of females had attended primary school ("Peruskoulu"), 39% of males and 17% of females had attended high school ("Lukio"), and 11% of males and 33% of females had not attended school ("Ei lainkaan").According to Statistics Finland, in 2012, 77.9% of Somalia-born immigrants in Finland had attained a lower secondary or unknown education level, 17.9% had attained an upper secondary education level, and 4.2% had attained a tertiary education level.