private static void Main()
{
var firstDiscipline = new Discipline("Mathematic", 20, 3, "Some comment for math...");
var secondDiscipline = new Discipline("Physics", 22, 4);
var firstTeacher = new Teacher("Georgi Gerogiev", "Some comment for the teacher...");
var secondTeacher = new Teacher("Ivan Ivanov");
firstTeacher.AddDiscipline(firstDiscipline);
firstTeacher.AddDiscipline(secondDiscipline);
secondTeacher.AddDiscipline(firstDiscipline);
secondTeacher.AddDiscipline(secondDiscipline);
var firstStudent = new Student("Pesho Peshov", 112, "Some comment about the student...");
var secondStudent = new Student("Gosho Goshov", 113);
var exampleSchoolClass = new School("Some unique ID", "Some comment...");
exampleSchoolClass.AddStudent(firstStudent);
exampleSchoolClass.AddStudent(secondStudent);
exampleSchoolClass.AddTeacher(firstTeacher);
exampleSchoolClass.AddTeacher(secondTeacher);
}