• The number of students increases from 40 to 65.

  • Grades 9 and 10 as well as preschool are opened.

  • Obtaining an education license for upper secondary and preschool.

  • Applying for status as MYP (Middle Years Programme) candidate school.

  • Creating and implementing the quality system of the school.

  • Consecutive grades still form mostly combined classes e.g. grade 1 and 2 forms a single class.

  • Defining the characteristics of IST e.g. entrepreneurship, mindfulness, multi-intelligence.


  • The number of students increases from 65 to 95.

  • Grades 11 and 12 are opened

  • Full PYP (Primary Years Programme) status from preschool to grade 6.

  • Applying for and obtaining DP (Diploma Programme) candidate status.

  • Basic school final exam in accordance with national curriculum.

  • Library and science classes are equipped.

  • Implementation of specialties of IST e.g. mindfulness.


  • The number of students increases from 95 to 120.

  • The gradual elimination of combined classes.

  • Two classes in preschool.

  • Full MYP (Middle Years Programme) member status.

  • Gymnasium final examination in accordance with the national curriculum.

  • Intensification of the specialties of IST e.g. entrepreneurship.

  • Continuous implementation of IB in grades 11 and 12 as a DP (Diploma Programme) candidate school.


  • The number of students increases from 120 to 150.

  • A further reduction in combined classes with at least 8 individual classes e.g. grade 1 and grade 2 are separate classes with their own class teachers.

  • Full DP (Diploma Programme) member status.

  • Fully IB accredited education from preschool to gymnasium (grade 12) level.

  • The basic school takes final exam in IB system.

  • Moving into a new school building.


  • The number of students increases from 150 to 175.

  • At least 11 individual classes across all grades from grade 1 to grade 12.

  • IST becomes self-supporting.

  • Gymnasium takes final examination in the IB system.

  • IST actively participates in international education networks.

  • IST becomes a prestigious landmark institution in Ülemiste City.


  • The number of students increases from 175 to 200.

  • No combined classes.

  • 12 classes from grades 1 to 12.

  • Both preschool groups are at a maximum size of 18 students per group.

  • The reputation of IST as a preferred school for international education in English is solidified.

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