The Music Gymnasium with Lyceum classes of Theski was founded with the no. no. FEK 374B09061992 The student potential is 386 students while the teachers who serve in it is 121 The number of departments is of General Education 17 and the total sections 1114 Today it operates in buildings that do not meet the energy consumption standards as after the energy inspection it is classified in category D. Therefore, it is necessary to perform interventions both in the shell of the building and in its electrical and mechanical installations in order to upgrade energy and offer better comfort conditions to both students and educational staff.