Whether you will be promoted to Class  10 after failing in one subject in Class 9 will depend on your school's regulations. Usually, students are allowed to take re-tests and are promoted to Class 10 without any concern. However, for Class 10 board exams, extra caution is required since these exams are regulated by CBSE or state boards, and failing candidates must retake the exams the following year.

Hello there

As you're asking about class 9th then I want to tell you that it totally depends upon your school that they are allowing students to enter to the class 10th without passing that subject or not just because class 9th academic of any student is in the hands of the school authorities. But according to my experience you wouldn't finding any school which don't allow the students to enter to their high school. This is because they don't want to make any student a year back or else something. So there may be any formal type test which your school might conduct and say to you that to qualify it to go to class 10th. There's nothing to worry about and you can contact to your school seniors too who faced this as they will help you a lot.

I hope it helps you!

Thank you!

It depends on the school in which you are studying whether they will promote you to the 10th class or not. You may need to contact your school authorities. Most of the schools in India promote students to the 10th class and you need not to worry because 9th standard examination are not board examination. But you must be careful while preparing for 10th class board examinations. This is because the 10th board examinations are regulated by CBSE board or state board and if any candidate fails in the board examination then he or she has to reappear next year for clearing 10th class board examination.

Read Also about CBSE 10th board examination:

https://www.google.com/url?sa=t&source=web&rct=j&url=https://school.careers360.com/exams/cbse-class-10th/amp&ved=2ahUKEwiz3dWZ4KP2AhUnBKYKHZTcCGQQFnoECAcQAQ&usg=AOvVaw3jFwmS2U7ALW0LwCbXmQ2Q