Original sentence: German School Seoul International.German School Seoul International (DSSI) (in German: Deutsche Schule Seoul International - DSSI)  is a bilingual German-English international school in Seoul, Korea.The School caters to children from Kindergarten (starting at age 2 up to 6 years) to elementary school (starting at age 6, grades 1 to 4) to highschool (8-year German "Gymnasialstufe"), allowing them to obtain a high school diploma (Abitur - Deutsche Internationale Abiturprüfung) which grants eligibility for German and many other universities.The school has a pupil-teacher ratio of approx.every 6 - 1
Edited sentence: German School Seoul International (DSSI) is.German School Seoul International (in German: Deutsche Schule Seoul International - DSSI)  is a bilingual German-English international school in Korea.The School caters to children from Kindergarten (starting at age 2 up to 6 years) to elementary school (starting at age 6, grades 1 to 4) to highschool (8-year German "Gymnasialstufe"), allowing them to obtain the highschool diploma (Abitur - DIAP Deutsche Internationale Abiturprüfung) which grants eligibility for German and many other universities.The school has dedicated teachers and a very high pupil-teacher ratio - for approx.every 6 pupils there is one teacher