A group led by technologist engineer Zbigniew Neczaj-Hruzewicz officially submitted a proposal to the Pruzhany City Magistrate to open a school.

[1][3] A special social committee was formed to launch the institution, consisting of influential city residents, including the deputy mayor and the son of a distinguished participant in the Russian Revolution of 1905, as well as Father Bolesław Franciszek (Catholic military chaplain and social activist), Father Konstanty Gubarew (Orthodox clergyman from St. Alexander Nevsky Cathedral), the local rabbi, engineer I. Czarnocki (landowner), Dr. Augustyn Pacewicz (leader of the local gentry and social activist), Mr. Krywopisza (owner of the city pharmacy), Birnbaum, and a representative of the officer corps.

On 3 October 1922, the school was ceremonially opened, attended by representatives of various state institutions, a large number of gentry, bourgeoisie, peasants, workers, and Orthodox Jews.

According to an agreement between the curatorium and the Pruzhany Municipal Council, the city provided the entire previous wooden building with a small courtyard for the gymnasium's needs.

[1] On 6 November 1923, the Ministry of Religious Affairs and Public Education officially named the school Państwowe Wyższe Gimnazjum im.

[7] Shortly thereafter, through the efforts of the Directorate and the Parent Committee, the Pruzhany City Magistrate renovated and provided a brick building with a soccer field for the gymnasium.

From the following year, classes returned to a normal schedule due to the leasing of premises by the Parent Committee, which accommodated three classrooms and offices.

[3] In September 1928, Headmaster Władysław Cichocki ended his tenure in Pruzhany to assume the position of director of the Romuald Traugutt Gymnasium in Brest [pl] near Bug river.

The considerable contribution to this was made by the landowner Feliks Suligowski from the Bukrabowszczyzna estate, who offered building materials.

A soccer field was arranged next to the school, used for gymnastics and transformed into an ice rink in winter for playing hockey.

[10] In 1940 and June 1941, some former gymnasium teachers were accused of counter-revolutionary activities and were deported with their families to Kolpashevo in the Tomsk Oblast and to the Kazakh Soviet Socialist Republic.

[1][5] At the same time, some teachers among those who remained in Pruzhany, including Łebkowska-Wrońska and Jan Łozowski, continued the gymnasium's activities clandestinely, conducting secret classes, which were successful throughout the entire period of World War II.

The Parent Committee organized meals for its residents in private homes in Pruzhany, either paying for the service or providing food products, which helped to keep costs low.

[1][5] In the 1925/1926 school year, 20 students lived in the dormitory, of which 8 paid from 15 to 35 Polish złoty for its use, while the rest were exempt from the fee.

[5] The funds of the gymnasium mainly came from three sources: mandatory tuition fees, grants from the City Council, and voluntary contributions to the school.

From the accumulated funds, the gymnasium paid salaries to teachers, bought books, equipment, fuel, and financed scientific work.

[5] In addition, students created a wall newsletter Nasza droga, of which a total of 13 issues were published and which was mentioned in the magazine Kuźnia Młodych.

The school was an important cultural center of the city of Pruzhany and constantly engaged in events and celebrations of a general nature.

The teaching staff participated in the organization of theatrical performances, summer camps, sightseeing trips within and beyond the county.

Thanks to the efforts of the gymnasium headmaster and the support of the Education Board of the Polesie District, classes for grades I, II, and III were launched at the beginning of the school year 1925/1926.

The fee system limited the opportunities for local Belarusians, who mostly belonged to lower-income groups, to access education at the gymnasium compared to Poles and Jews.

According to Juras Zialewicz, director of the Prużański Pałacyk museum, 63% of students were Poles, 32% were Jews, 4% were Belarusians, 0.6% were Russians, and 0.5% were Germans.

Among the parents of the students, 31% were civil servants, 18% were merchants, 7% were craftsmen, 6% were landowners, 6% were teachers, and the rest were industrialists, military personnel, and professionals.

[15] On the front side, it depicts an image of the Our Lady of the Gate of Dawn surrounded by a circular golden inscription: PAŃSTWOWE GIMNAZJUM i LICEUM IM.

The back side features a stylized image of the White Eagle in a crown against a background of red rays and a blue field.

The eagle is surrounded by a golden inscription: OJCZYZNA NAUKA CNOTA, which is a quote from Adam Mickiewicz's poem Pieśń filarecka.

There was concern that the symbol of the gymnasium might not be welcomed by the Soviet authorities due to the presence of the image of Our Lady of the Gate of Dawn.

Several years later, it unexpectedly resurfaced – it was left for Edward Bazan's son, Wiesław, in his workshop at the Diora factories in Dzierżoniów.

[5] The gymnasium in Pruzhany is a common theme in poems, songs, and prose works, both professional and amateur, authored by former students of this institution.