Previously known as Quality Schools International (QSI), the Ljubljana International School (LSI) is primarily a school for pre-school, elementary and secondary education. The instruction is delivered in the English language for children from 3 to 17 years of age. They offer small class sizes, and well-qualified educators, many with teaching degrees and experience in the US, a welcoming facility and a vibrant international community. Their enrolment includes students from the diplomatic community and international business community, as well as Slovenes. The school is fully accredited in the US, and is a designated SAT testing site.