How many times I have to do revision to get 95 above percentage in 12 boards isc
Before starting any chapter/topic just do a 5-10 min overview about that chapter that'll help you in better understanding.
Once you're done with the whole syllabus then don't revise it fully second time just mark the questions which you felt tough during solving it and only solve them during revision.
2-3 time revision is enough for class 12 to score more than 95%.
Feel free to comment if you have any doubt
Good luck
It is not fixed actually, it depends on the mind of the Student that how is getting the things which are important for him.There is no fixed criteria of revision to get the 95 percentage in 12th whether you are from any board. If you getting the things correctly and not forget those thing which are important. Then there is no need of revision. But if you are getting things forgetable, then yes you have to revise them again and again until to get remember them.