At the begining of the First World War it stopped working again. At the begining of 1919 the school reopened with the fifth form for the first time. From 1921-1929 it had six forms, but was closed again becose it didn’t meet the criteria of the educational authorities.
It was working continuously until the Second World War having been one of the best equipped schools in Serbia. Beside the large library and teaching appliances for different subjects, it had the so called “pupils’ cinema” . There were many activities at school.
During the occupation the school worked for 17 months with the teaching process similar to a course. After the war, the school was named “State High School of Vuk Karadzic” . The building was rebuilt and the teaching process has been improved since then.
In honour of its 100th anniversary, in 1971 the school was awarded The Medal of Merits with gold star, and in 1977 it was awarded “Vuk’s Reward for Special Contribution to Development of Culture” in Serbia. Being proud of its pupils who attended the school, like Jovan Cvijic, a famous geographer, and professors who have been working hard during the years, the Grammar School “Vuk Karadzic” in Loznica has significatly marked the education in Serbia.