Radost Kindergarten, Ruse – Bulgaria

Panayot Volov Primary School – Varna

Graf N. Ignatiev Primary School, Village of Graf Ignatievo

Primary School “Exarh Antim I” Plovdiv

Simeon Veliki Vocational Technical High School, Veliki Preslav

Dimcho Debelyanov Secondary School – Belene

Science and Mathematics Secondary School “Yane Sandanski” – Gotse Delchev, Bulgaria

Secondary School “Vasil Levski” – Manole, Bulgaria

“Panayot Volov” Secondary school – Shumen, Bulgaria

Primary school “Hristo Botev” , Asenovgrad

Secondary school “St.st.Cyril and Methodius”, Yakoruda, Bulgaria

National High School of Mathematics and Science “Academician Lubomir Chakalov” – Sofia, Bulgaria

“Rakovski” High School of Trade, Varna

4 Secondary school “Dimcho Debelyanov”, Blagoevgrad

Science and Math High School “Akademik Ivan Gyuzelev” – Gabrovo, Bulgaria

Primary School “Hristo Smirnenski”, Ruse

Elementary school “Otets Paisiy” – Simeonovgrad, Bulgaria

Primary school “Otets Paisiy” – Ruse, Bulgaria

74 Secondary school “Gotse Delchev” – Sofia, Bulgaria

High School “Konstantin Konstantinov” – Sliven city

Kindergarden “Alen Mak” – Harmanli, Bulgaria

Professional High School of Food Technologies and Tourism – Yambol, Bulgaria

BSU “Doktor Petar Beron” – Praga, Czech Republic

“Vasil Levski” Primary School 156 – Kremikovtsi, Bulgaria

“Aleko Konstantinov” High School of Tourism – Pleven, Bulgaria

“Dimitar Blagoev” Base School – Stara Zagora, Bulgaria

“Vasil Levski” Secondari School – Galabovo, Bulgaria