Hello

You can follow these steps to find your registration number of class 11th:-

• You can check your school id or admit card because usually registration number is printed on it.
• You can ask your school office because they must have the full list of registration numbers.
• some schools have online student login portal, if your school have one then you can try searching on the portal by viewing registration details or downloading exam hall tickets
• if you have CBSE OR ICSE board then you can visit their official websites for finding your registration number.