When choosing the optimal architectural and construction solutions for the projected extension, the extreme crowding of the site and the need to ensure regulatory requirements for insolation and the level of illumination of the premises of the lyceum were taken into account.

The building is arranged in three floors and closely adjoins the existing building from the north side. All 16 classrooms of the elementary school are oriented to the southeast, the dining hall, technological premises of the dining room, and the assembly hall go to the north. The main entrance to the building is from the courtyard, under a canopy on the second floor. There is another entrance through the stairs from Sacco and Vanzetti Street, not far from the main entrance to the main building. The annex building is connected to the main building by two passages along the ground floor. On the opposite side, from the side of the local passage, there is another entrance that allows the commercial use of the dining room and the pool during the school holidays.

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The concept uses simple facing materials, but focuses on the uniqueness of the architecture and interior of each room. The concept of the new annex takes into account the architectural idea of the existing building and continues the principle of “shifting” the different volumes of the school relative to each other. This is done in order to visually reduce the scale of the building.

The existing school consists of 3 parts, which are specially maximally different from each other - in color, in height, in location. The concept of the new extension supports this principle of proportionality of elements, so the building is visually divided into several small volumes, different in decoration, height and window pattern. The annex building continues the chain of cubes “scattered” in space.