Uzbekistan has a high literacy rate, with 99.9% of adults above the age of 15 being able to read and write. However, with only 76% of the under-15 population currently enrolled in education (and only 20% of the 3–6 year olds attending pre-school), this figure may drop in the future. Students attend school Monday through Saturday during the school year, and education officially concludes at the end of the 12th grade. There are two international schools operating in Uzbekistan, both in Tashkent: The British School catering for elementary students only, and Tashkent International School, a K-12 international curriculum school.