diff --git a/bankaccount.py b/bankaccount.py
new file mode 100644
index 0000000..6ccc48c
--- /dev/null
+++ b/bankaccount.py
@@ -0,0 +1,25 @@
+class BankAccount:
+    def __init__(self,account_number,name,balance):
+        self.account_number=account_number
+        self.name=name
+        self.balance=balance
+
+    def deposit(self,d):
+        self.balance+=d
+    def withdrawal(self,w):
+        if w>self.balance:
+            print("Impossible operation! Insufficient balance!")
+        else:
+            self.balance-=w
+    def bank_fees(self):
+        self.balance*=0.95
+    def display(self):
+        print(f'Account number:{self.account_number}\nAccount Name:{self.name}\nAccount balance:{self.balance}\n')
+
+sefa=BankAccount('2007','sefa',80)
+sefa.deposit(30)
+sefa.withdrawal(150)
+sefa.withdrawal(10)
+sefa.bank_fees()
+sefa.display()
+    
diff --git a/rectangle.py b/rectangle.py
new file mode 100644
index 0000000..3f9b0c2
--- /dev/null
+++ b/rectangle.py
@@ -0,0 +1,16 @@
+class Rectangle:
+    def __init__(self,length,width):
+        self.length=length
+        self.width=width
+    def perimeter(self):
+        self.perimeter=self.length*2+self.width*2
+    def area(self):
+        self.area=self.length*self.width
+    def display(self):
+        print (f'Rectangle lenght:{self.length}\nRectangle width:{self.width}\nRectangle perimeter:{self.perimeter}\nRectangle area:{self.area}\n')
+        
+a=Rectangle(3,4)
+a.perimeter()
+a.area()
+print(a.display())
+
diff --git a/school.py b/school.py
new file mode 100644
index 0000000..968dda4
--- /dev/null
+++ b/school.py
@@ -0,0 +1,36 @@
+class school:
+        capacity=0
+        class_dict={}
+    
+class Student():
+    def __init__(self,name,surname,gender='Unknown'):
+        self.name=name
+        self.surname=surname
+        self.gender=gender
+
+    def add_student(self,capacity):      
+        self.capacity=school.capacity
+        school.capacity+=1
+        if school.capacity<4:
+            school.class_dict[self.name+self.surname]=[self.name,self.surname,self.gender]
+        else:
+            print('Sorry class capacity is full')
+    def __str__(self) :   
+        return(f'Student name:{self.name}\nStudent surname:{self.surname}\nStudent Gender:{self.gender}')
+
+class_a=school()
+student_b=Student('Sefa',"sahan",'male')
+student_b.add_student(class_a.capacity)
+student_b=Student('Omer',"sahan",'male')
+student_b.add_student(class_a.capacity)
+student_c=Student('Faik',"sahan",'male')
+student_c.add_student(class_a.capacity)
+student_d=Student('Neyran',"sahan",'Female')
+student_d.add_student(class_a.capacity)
+print(student_d)
+print(student_d.__dict__)
+print(class_a.__dict__)
+print(class_a.class_dict)
+
+        
+