diff --git a/Assessment.h b/Assessment.h
new file mode 100644
index 0000000..c0e3f29
--- /dev/null
+++ b/Assessment.h
@@ -0,0 +1,53 @@
+#ifndef UNIVERSITY_ASSESSMENT_H
+#define UNIVERSITY_ASSESSMENT_H
+#include <string>
+
+#include "Teacher.h"
+#include "Date.h"
+
+using namespace std;
+
+class Assessment {
+private:
+    Teacher *_teacher;
+    string _subject;
+    Date *_date;
+    unsigned int _assessment;
+
+public:
+    Assessment(const Teacher* teacher, const string& subject, const Date* date,const unsigned int assessment)
+        : _subject(subject), _assessment(assessment) {
+        _teacher = new Teacher(teacher);
+        _date = new Date(date);
+    }
+
+    Assessment(const Assessment &assessment) {
+        _subject = assessment._subject;
+        _assessment = assessment._assessment;
+        _date = assessment._date;
+        _teacher = assessment._teacher;
+    }
+
+    ~Assessment() {
+        delete _teacher;
+        delete _date;
+    }
+
+    string get_subject() const {
+        return _subject;
+    }
+
+    unsigned int get_assessment() const {
+        return _assessment;
+    }
+
+    Teacher get_teacher() const {
+        return *_teacher;
+    }
+
+    Date get_date() const {
+        return *_date;
+    }
+};
+
+#endif //UNIVERSITY_ASSESSMENT_H
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2f163f8..b8807f1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,4 +4,9 @@ project(university)
 set(CMAKE_CXX_STANDARD 20)
 
 add_executable(university main.cpp
-        Date.h)
+        Date.h
+	Person.h
+	Teacher.h
+		Student.h
+		Assessment.h
+)
diff --git a/Date.h b/Date.h
index 9f22a05..da3be90 100644
--- a/Date.h
+++ b/Date.h
@@ -1,9 +1,11 @@
 #ifndef UNIVERSITY_DATE_H
 #define UNIVERSITY_DATE_H
 
+
 enum ErrorType {
     MonthError, DayError
 };
+
 enum DAYS {
     BEGIN_DAY = 1, END_DAY_28 = 28, END_DAY_30 = 30, END_DAY_31 = 31
 };
@@ -14,54 +16,54 @@ class Date {
     unsigned int _month;
     int _year;
 
-    void CheckDay(int day, int end) {
+    void check_day(int day, int end) {
         if (day > end || day < DAYS::BEGIN_DAY) {
             throw ErrorType::DayError;
         }
     }
 
 public:
-    void Init(int day, int month, int year) {
+    Date(unsigned int day, unsigned int month, unsigned int year) {
         if (month > 12 || month < 1) {
             throw ErrorType::MonthError;
         }
 
         switch (month) {
             case 1:
-                CheckDay(day, DAYS::END_DAY_31);
+                check_day(day, DAYS::END_DAY_31);
                 break;
             case 2:
-                CheckDay(day, DAYS::END_DAY_28);
+                check_day(day, DAYS::END_DAY_28);
                 break;
             case 3:
-                CheckDay(day, DAYS::END_DAY_31);
+                check_day(day, DAYS::END_DAY_31);
                 break;
             case 4:
-                CheckDay(day, DAYS::END_DAY_30);
+                check_day(day, DAYS::END_DAY_30);
                 break;
             case 5:
-                CheckDay(day, DAYS::END_DAY_31);
+                check_day(day, DAYS::END_DAY_31);
                 break;
             case 6:
-                CheckDay(day, DAYS::END_DAY_30);
+                check_day(day, DAYS::END_DAY_30);
                 break;
             case 7:
-                CheckDay(day, DAYS::END_DAY_31);
+                check_day(day, DAYS::END_DAY_31);
                 break;
             case 8:
-                CheckDay(day, DAYS::END_DAY_31);
+                check_day(day, DAYS::END_DAY_31);
                 break;
             case 9:
-                CheckDay(day, DAYS::END_DAY_30);
+                check_day(day, DAYS::END_DAY_30);
                 break;
             case 10:
-                CheckDay(day, DAYS::END_DAY_31);
+                check_day(day, DAYS::END_DAY_31);
                 break;
             case 11:
-                CheckDay(day, DAYS::END_DAY_30);
+                check_day(day, DAYS::END_DAY_30);
                 break;
             case 12:
-                CheckDay(day, DAYS::END_DAY_31);
+                check_day(day, DAYS::END_DAY_31);
                 break;
         }
 
@@ -69,17 +71,23 @@ class Date {
         _month = month;
         _year = year;
     }
-
-    int GetDay() {
+    Date(const Date& date) {
+        _day = date._day;
+        _month = date._month;
+        _year = date._year;
+    }
+    ~Date() {} = default;
+    int get_day() {
         return _day;
     }
 
-    int GetMonth() {
+    int get_month() {
         return _month;
     }
-    int GetYear() {
+
+    int get_year() {
         return _year;
     }
 };
 
-#endif //UNIVERSITY_DATE_H
\ No newline at end of file
+#endif //UNIVERSITY_DATE_H
diff --git a/Student.h b/Student.h
new file mode 100644
index 0000000..de09287
--- /dev/null
+++ b/Student.h
@@ -0,0 +1,47 @@
+#ifndef UNIVERSITY_STUDENT_H
+#define UNIVERSITY_STUDENT_H
+#include <string>
+#include <vector>
+
+#include "Person.h"
+#include "Assessment.h"
+using namespace std;
+
+class Student : public Person {
+private:
+    string _faculty;
+    string _group;
+    vector<Assessment>* _assessments;
+
+public:
+    Student(const string& last_name, const string& first_name, Date* date_of_birth, Sex sex, const string& faculty,
+            const string &group,
+            const vector<Assessment> *assessments)
+        : Person(last_name, first_name, date_of_birth, sex), _faculty(faculty), _group(group) {
+        _assessments = new assessments;
+    };
+
+    Student(const Student &student) {
+        _faculty = student._faculty;
+        _group = student._group;
+        _assessments = student._assessments;
+    }
+
+
+    ~Student() {
+        delete _assessments;
+        ~Person();
+    }
+    string get_faculty() const {
+        return _faculty;
+    }
+    string get_group() const {
+        return _group;
+    }
+
+    vector<Assessment>* get_assessments() const {
+        return _assessments;
+    }
+
+};
+#endif //UNIVERSITY_STUDENT_H
diff --git a/Teacher.h b/Teacher.h
index 30ed1c2..9be3e3d 100644
--- a/Teacher.h
+++ b/Teacher.h
@@ -17,7 +17,11 @@ class Teacher : public Person {
     Teacher(const string& last_name, const string& first_name, Date* date_of_birth, Sex sex, const string& faculty)
         : Person(last_name, first_name, date_of_birth, sex),
           _faculty(faculty) {
-        _subjects = new vector<string>();
+        _subjects = new vector<string>;
+    }
+    Teacher(const Teacher& teacher):Person(teacher) {
+        _subjects = teacher._subjects;
+        _faculty = teacher._faculty;
     }
 
     ~Teacher() {
@@ -30,8 +34,8 @@ class Teacher : public Person {
         _subjects->push_back(subject);
     }
 
-    vector<string>* get_subjects() const {
-        return _subjects;
+    vector <string>* get_subjects() const {
+        return new _subjects;
     }
 
     string get_faculty() const {