It is officially required to have 75% attendance for class 11, although this may vary depending on the school's policies. For instance, in my school, exceptional students who perform well in exams can request for attendance relaxation from the principal. However, I believe that such relaxation should not be taken lightly, as it may lead to laziness and time wastage. Instead, it is advisable to utilize the 25% leave allowance wisely when necessary.

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Dear Student,

You have not mention that which boar do you belong to. But 75% is the ideal requirements that many boards preffer. So if you have more than this than it is fine enough but if you are lacking then it can be serious problem. so manage accordingly.

Hope I can help you out.