I've cleaned up my code a bit according to some great recommendations from the community. However I still get the error. All of my close disclosing the error message is posted below the error message. Hopefully this is correctly formatted; I greatly appreciate the help of this community.

```
DELETING STUDENT INFORMATION : 

ENTER STUDENT'S LAST NAME: blow
Traceback (most recent call last):
  File "/Users/jake./PycharmProjects/StudentRecords/StudentRecords.py", line 281, in <module>
    SMS.delete_student_information()
  File "/Users/jake./PycharmProjects/StudentRecords/StudentRecords.py", line 70, in delete_student_information
    student_mobile_number.remove(student_mobile_number[LOC])
IndexError: list index out of range

Process finished with exit code 1

```

```
import sys

first_name = []
last_name = []
student_address = []
student_email = []
student_age = []
student_mobile_number = []
student_id = []

class student_management_system:
    @staticmethod
    def add_student_information():
        print("ADDING STUDENT INFORMATION : \n")
        print("ENTER STUDENT FIRST NAME :", end=" ")
        NAME = input().upper()
        first_name.append(NAME)

        print("ENTER STUDENT LAST NAME :", end=" ")
        lname = str(input())
        last_name.append(lname)

        print("ENTER STUDENT AGE :", end=" ")
        AGE = int(input())
        student_age.append(AGE)

        print("ENTER STUDENT ID :", end=" ")
        ID = input().upper()
        student_id.append(ID)

        print("ENTER STUDENT E-MAIL ID :", end=" ")
        EMAIL_ID = input().upper()
        student_email.append(EMAIL_ID)

        print("ENTER STUDENT ADDRESS :", end=" ")
        ADDRESS = input().upper()
        student_address.append(ADDRESS)

        print("ENTER STUDENT MOBILE NUMBER :", end=" ")
        MOBILE_NUMBER = input()
        MOBILE_NUMBER_LEN = len(MOBILE_NUMBER)

        if MOBILE_NUMBER_LEN < 10:
            print("\t PLEASE ENTER VALID TEN DIGIT MOBILE NUMBER.")
        else:
            student_mobile_number.append(MOBILE_NUMBER)
            print("\n")
            print("\t STUDENT INFORMATION ADDED SUCCESSFULLY.")
            print("\n")

    @staticmethod
    #   THIS FUNCTION HELP TO 'DELETE' DATA OF STUDENT
    def delete_student_information():
        print("DELETING STUDENT INFORMATION : \n")

        if len(first_name) == 0 and len(last_name) == 0 and len(student_age) == 0 and len(
                student_id) == 0 and len(student_mobile_number) == 0 and len(student_address) == 0 and len(
            student_email) == 0:
            print("\n")
            print("\t\t\t 'PLEASE FILL SOME INFORMATION DON'T KEEP IT EMPTY")
            print("\n")
        else:
            print("ENTER STUDENT'S LAST NAME:", end=" ")
            l_name = str(input())
            LOC = last_name.index(l_name)

            last_name.remove(last_name[LOC])
            first_name.remove(first_name[LOC])
            student_mobile_number.remove(student_mobile_number[LOC])
            student_age.remove(student_age[LOC])
            student_address.remove(student_address[LOC])
            student_email.remove(student_email[LOC])
            student_id.remove(student_id[LOC])

            print("\n")
            print("\t\t STUDENT INFORMATION DELETED SUCCESSFULLY.")
            print("\n")

    @staticmethod
    #    THIS FUNCTION HELP TO 'UPDATE' DATA OF STUDENT.
    def update_student_information():
        print("UPDATE STUDENT INFORMATION : \n")

        if len(first_name) == 0 and len(last_name) == 0 and len(student_age) == 0 and len(
                student_id) == 0 and len(student_mobile_number) == 0 and len(student_address) == 0 and len(
            student_email) == 0:
            print("\n")
            print("\t\t\t 'PLEASE FILL SOME INFORMATION DON'T KEEP IT EMPTY")
            print("\n")
        else:
            print("ENTER STUDENT ATTRIBUTE YOU WANT TO DELETE :", end="\n")
            print("LIKE 'NAME, ROLL NUMBER, AGE, MOBILE NUMBER, ADDRESS, EMAIL, CLASS.")
            print("ENTER HERE :", end=" ")
            ATTRIBUTE = input().upper()

            if ATTRIBUTE == 'NAME':
                print("ENTER 'OLD FIRST NAME' :", end=" ")
                OLD_NAME = input()
                LOC_NAME = first_name.index(OLD_NAME)

                print("ENTER 'NEW FIRST NAME' :", end=" ")
                NEW_NAME = input()
                first_name[LOC_NAME] = NEW_NAME
                print("\t 'FIRST NAME UPDATED SUCCESSFULLY.")
                print("\n")

            elif ATTRIBUTE == 'LAST NAME':
                print("ENTER 'OLD LAST NAME' :", end=" ")
                old_last_name = str(input())
                LOC_ROLL = last_name.index(old_last_name)

                print("ENTER 'NEW ROLL NUMBER' :", end=" ")
                NEW_NAME = int(input())
                last_name[LOC_ROLL] = NEW_NAME
                print("\t 'ROLL NUMBER UPDATED SUCCESSFULLY.")
                print("\n")

            elif ATTRIBUTE == 'AGE':
                print("ENTER 'OLD AGE' :", end=" ")
                OLD_AGE = int(input())
                LOC_ROLL = student_age.index(OLD_AGE)

                print("ENTER 'NEW AGE' :", end=" ")
                NEW_AGE = int(input())
                student_age[LOC_ROLL] = NEW_AGE
                print("\t 'AGE UPDATED SUCCESSFULLY.")
                print("\n")

            elif ATTRIBUTE == 'ADDRESS':
                print("ENTER 'OLD ADDRESS' :", end=" ")
                OLD_ADDRESS = input()
                LOC_ADDRESS = student_address.index(OLD_ADDRESS)

                print("ENTER 'NEW ADDRESS' :", end=" ")
                NEW_ADDRESS = input()
                student_address[LOC_ADDRESS] = NEW_ADDRESS
                print("\t 'ADDRESS UPDATED SUCCESSFULLY.")
                print("\n")

            elif ATTRIBUTE == 'EMAIL':
                print("ENTER 'OLD EMAIL' :", end=" ")
                OLD_EMAIL = input()
                LOC_EMAIL = student_email.index(OLD_EMAIL)

                print("ENTER 'NEW EMAIL' :", end=" ")
                NEW_EMAIL = input()
                student_email[LOC_EMAIL] = NEW_EMAIL
                print("\t 'EMAIL - ID UPDATED SUCCESSFULLY.")
                print("\n")

            elif ATTRIBUTE == 'ID':
                print("ENTER 'OLD STUDENT ID' :", end=" ")
                OLD_CLASS = input()
                LOC_CLASS = student_id.index(OLD_CLASS)

                print("ENTER 'NEW STUDENT ID' :", end=" ")
                NEW_CLASS = input()
                student_id[LOC_CLASS] = NEW_CLASS
                print("\t 'CLASS UPDATED SUCCESSFULLY.")
                print("\n")

            elif ATTRIBUTE == 'MOBILE NUMBER':
                print("ENTER 'OLD MOBILE NUMBER' :", end=" ")
                OLD_MOBILE = input()

                print("ENTER 'NEW MOBILE NUMBER' :", end=" ")
                NEW_MOBILE = input()
                MOBILE_NUMBER_LEN = len(OLD_MOBILE)
                M_N_LEN = len(NEW_MOBILE)

                if MOBILE_NUMBER_LEN < 10:
                    print(end="\n")
                    print("PLEASE ENTER TEN DIGIT MOBILE NUMBER.")
                    print("SYSTEM HAS STOP, PLEASE TRY AGAIN.")
                    sys.exit()
                elif M_N_LEN < 10:
                    print(end="\n")
                    print("\t PLEASE ENTER VALID TEN DIGIT MOBILE NUMBER.")
                    print("\t SYSTEM WORKING HAS STOP PLEASE TRY AGAIN.")
                    sys.exit()
                else:
                    LOC_MOBILE = student_mobile_number.index(OLD_MOBILE)
                    student_mobile_number[LOC_MOBILE] = NEW_MOBILE
                    print("\t 'MOBILE NUMBER UPDATED SUCCESSFULLY.")
                    print("\n")

    @staticmethod
    #    THIS FUNCTION HELP TO UPDATE 'DATA' OF STUDENT.
    def DISPLAY_STUDENT_INFORMATION():
        print("DISPLAYING STUDENTS INFORMATION : \n")

        if len(first_name) == 0 and len(last_name) == 0 and len(student_age) == 0 and len(
                student_id) == 0 and len(student_mobile_number) == 0 and len(student_address) == 0 and len(
            student_email) == 0:
            print("\n")
            print("\t\t\t 'OOPS ! NOTHING TO DISPLAY, BECAUSE NO DATA IS THERE.")
            print("\n")
        else:
            print("STUDENT'S FIRST NAME : ", end="\n")

            for x in first_name:
                print(x)
            print()

            print(end="\n")

            print("STUDENT'S LAST NAME :", end="\n")

            for y in last_name:
                print(y)
            print()

            print(end="\n")

            print("STUDENT'S AGE :", end="\n")

            for z in student_age:
                print(z)
            print()

            print(end="\n")

            print("STUDENT'S MOBILE NUMBER :", end="\n")

            for x in student_mobile_number:
                print(x)
            print()

            print(end="\n")

            print("STUDENT'S EMAIL :", end="\n")

            for y in student_email:
                print(y)
            print()

            print(end="\n")

            print("STUDENT'S ID :", end="\n")

            for z in student_id:
                print(z)
            print()

            print(end="\n")

            print("STUDENT'S ADDRESS :", end="\n")

            for x in student_address:
                print(x)
            print()

            print(end="\n")

SMS = student_management_system()

if __name__ == '__main__':
    print("\n")

    print("' STUDENT RECORDS  ' \n")
    run = True

    while run:
        print("PRESS FROM THE FOLLOWING OPTION : \n")

        print("PRESS 1 : TO ADD STUDENT INFORMATION.")
        print("PRESS 2 : TO DELETE STUDENT INFORMATION.")
        print("PRESS 3 : TO UPDATE STUDENT INFORMATION.")
        print("PRESS 4 : TO DISPLAY STUDENT INFORMATION.")
        print("PRESS 5 : TO EXIT SYSTEM.")

        OPTION = int(input("ENTER YOUR OPTION : "))
        print("\n")
        print(end="\n")

        if OPTION == 1:
            SMS.add_student_information()
        elif OPTION == 2:
            SMS.delete_student_information()
        elif OPTION == 3:
            SMS.update_student_information()
        elif OPTION == 4:
            SMS.display_student_information()
        elif OPTION == 5:
            print("THANK YOU ! VISIT AGAIN.")
            run = False
        else:
            print("PLEASE CHOOSE CORRECT OPTION FROM THE FOLLOWING.")
            print("\n")

```

Removing multiple instances/bloated code