The roll code is a 5-digit unique number. You can find your roll code on your admit card. Generally, the school print the school code on the admit card. The CBSE roll code is a 7-digit number and it contains your school code and student registration number.

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I am student of up board where is my roll code on my mark sheet 2009 year pass out

Dear student,

If you are from cbse board, then your admit card will contain, center number or you can say centre code. Generally center code is of 4 digits. Also the school number or school code ia printed on the admit card and it is of 5 digits.

Then there would be your roll number or roll code, which is very important and it consists of 7 digits. Every student has a unique roll number also called board roll number or code.
Roll number or roll code is written just in the left side of the next line of "SHOULD BE PRESEVED BY THE CANDIDATE" of the admit card.