diff --git a/6.classes/students_and_mentor.py b/6.classes/students_and_mentor.py
index e1a1a9e..727c334 100644
--- a/6.classes/students_and_mentor.py
+++ b/6.classes/students_and_mentor.py
@@ -6,7 +6,17 @@ def __init__(self, name, surname, gender):
         self.finished_courses = []
         self.courses_in_progress = []
         self.grades = {}
-        
+
+    def rate_lecturer(self, lecturer, course, grade):
+        if isinstance(lecturer, Lecturer) and course in lecturer.courses_attached and course in self.courses_in_progress:
+            if course in lecturer.grades:
+                lecturer.grades[course].append(grade)
+            else:
+                lecturer.grades[course] = [grade]
+        else:
+            return 'Ошибка: Лектор не прикреплен к курсу или студент не записан на курс.'
+
+
 class Mentor:
     def __init__(self, name, surname):
         self.name = name
@@ -16,20 +26,55 @@ def __init__(self, name, surname):
     def rate_hw(self, student, course, grade):
         if isinstance(student, Student) and course in self.courses_attached and course in student.courses_in_progress:
             if course in student.grades:
-                student.grades[course] += [grade]
+                student.grades[course].append(grade)
+            else:
+                student.grades[course] = [grade]
+        else:
+            return 'Ошибка'
+
+
+class Lecturer(Mentor):
+    def __init__(self, name, surname):
+        super().__init__(name, surname)
+        self.grades = {}  # Словарь для хранения оценок от студентов
+
+    def average_grade(self):
+        total_grades = 0
+        total_courses = 0
+        for grades in self.grades.values():
+            total_grades += sum(grades)
+            total_courses += len(grades)
+        return total_grades / total_courses if total_courses > 0 else 0
+
+
+class Reviewer(Mentor):
+    def __init__(self, name, surname):
+        super().__init__(name, surname)
+
+    def rate_student(self, student, course, grade):
+        if isinstance(student, Student) and course in self.courses_attached and course in student.courses_in_progress:
+            if course in student.grades:
+                student.grades[course].append(grade)
             else:
                 student.grades[course] = [grade]
         else:
             return 'Ошибка'
- 
-best_student = Student('Ruoy', 'Eman', 'your_gender')
+
+
+# Пример использования классов
+best_student = Student('Иван', 'Иванов', 'мужской')
 best_student.courses_in_progress += ['Python']
- 
-cool_mentor = Mentor('Some', 'Buddy')
-cool_mentor.courses_attached += ['Python']
- 
-cool_mentor.rate_hw(best_student, 'Python', 10)
-cool_mentor.rate_hw(best_student, 'Python', 10)
-cool_mentor.rate_hw(best_student, 'Python', 10)
- 
-print(best_student.grades)
\ No newline at end of file
+
+cool_lecturer = Lecturer('Кирилл', 'Кириллов')
+cool_lecturer.courses_attached += ['Python']
+
+cool_reviewer = Reviewer('Александра', 'Александрова')
+cool_reviewer.courses_attached += ['Python']
+
+cool_reviewer.rate_student(best_student, 'Python', 3)
+
+best_student.rate_lecturer(cool_lecturer, 'Python', 9)
+best_student.rate_lecturer(cool_lecturer, 'Python', 10)
+
+print(f'Оценки студента {best_student.name} {best_student.surname}: {best_student.grades}')
+print(f'Оценки лектора {cool_lecturer.name} {cool_lecturer.surname}: {cool_lecturer.grades}')