diff --git a/bank_account.py b/bank_account.py
new file mode 100644
index 0000000..9c41600
--- /dev/null
+++ b/bank_account.py
@@ -0,0 +1,39 @@
+#Python program to create BankAccount class
+#with both a deposit() and withdraw function.
+
+#create the constructor with parameters: account_number, name and balance
+class BankAccount:
+    def __init__(self, account_number, name, balance):
+        self.account_number = account_number
+        self.name = name
+        self.balance = balance
+
+    #create deposit() method    
+    def deposit(self):
+        amount = float(input('Enter amount to be deposited: '))
+        self.balance += amount
+
+    #create withdrawal() method
+    def withdrawal(self):
+        amount = float(input('Enter amount to be withdrawn: '))
+        if self.balance < amount :
+            print('Impossible operation! Insufficient balance!')
+        else:
+            self.balance -= amount
+
+    #create bankFees() method
+    def bankFees(self):
+        self.balance = (95/100)* self.balance
+
+    #create display() method
+    def display(self):
+        print('\nAccount Number :' , self.account_number)
+        print('Account Name :' , self.name)
+        print('Account Balance :' , self.balance , '€')
+
+
+print('Hello! Welcome to Deposit & Withdrawal Machine')
+new_account = BankAccount(account_number=int(input('Account Number: ')), name=input('Account Name: '), balance=int(input('Account Balance: ')))
+new_account.withdrawal()
+new_account.deposit()
+new_account.display()
\ No newline at end of file
diff --git a/rectangle.py b/rectangle.py
new file mode 100644
index 0000000..5f2f658
--- /dev/null
+++ b/rectangle.py
@@ -0,0 +1,25 @@
+# Python program to create Rectangle class
+class Rectangle:
+    #define constructor with attributes: lenght and width
+    def __init__(self, length, width):
+        self.length = length
+        self.width = width
+
+    #create perimeter() method
+    def Perimeter(self):
+        return 2*(self.length + self.width)
+
+
+    #create Area() method
+    def Area(self):
+        return self.length * self.width
+    
+    #create display() method
+    def display(self):
+        print('The length of rectangle is :', self.length)
+        print("The width of rectangle is: ", self.width)
+        print("The perimeter of rectangle is: ", self.Perimeter())
+        print("The area of rectangle is: ", self.Area())
+
+my_rectangle = Rectangle(length=int(input('Length: ')), width=int(input('Width: ')))
+my_rectangle.display()
diff --git a/school.py b/school.py
new file mode 100644
index 0000000..f125626
--- /dev/null
+++ b/school.py
@@ -0,0 +1,38 @@
+class School:
+        capacity = 1
+        dict_of_class = {}
+
+
+class Student():
+    def __init__(self, firstname, lastname, age, gender = 'Unknown'):
+        self.firstname = firstname
+        self.lastname = lastname
+        self.age = age
+        self.gender = gender
+        
+    def add_student(self, capacity):
+        self.capacity = School.capacity
+        School.capacity += 1
+        if School.capacity < 6:
+            School.dict_of_class[self.firstname + self.lastname] = [self.firstname, self.lastname, self.age, self.gender]
+
+        else:
+            print('Error! Class is full! ')
+        
+            
+    def __str__(self):
+        return (f'\nStudent name: {self.firstname} {self.lastname}\nStudent Age: {self.age}\nStudent Gender: {self.gender}')
+    
+first_class = School()
+student1 = Student('Rumi', 'Yakar', 25, 'Female')
+student1.add_student(first_class.capacity)
+student2 = Student('Said', 'Bostan', 26, 'Male')
+student2.add_student(first_class.capacity)
+student3 = Student('Sami', 'Yakar', 24, 'Male')
+student3.add_student(first_class.capacity)
+student4 = Student('Ahmet', 'Yakar', 10, 'Male')
+student4.add_student(first_class.capacity)
+print(student2)
+print(student2.__dict__)
+print(first_class.dict_of_class)
+