tk_marks = Student_Class_Semester_Subject_TK_Methodist_Marks.objects.filter(
		student_class_semester_subject__student_class_semester__class_semester__grade_semester__grade__name='TK',
		student_class_semester_subject__student_class_semester__class_semester__class_semester_year__code='A',
		student_class_semester_subject__student_class_semester__class_semester__grade_semester__grade__section__institution_id='39',
		student_class_semester_subject__student_class_semester__class_semester__grade_semester__name='2',
		student_class_semester_subject__student_class_semester__class_semester__grade_semester__semester__semester_year__name='2018-2019')