Hello Dear,

The School Education Department of Tamil Nadu had changed the school books completely from 1st standard to 12th Higher Secondary. The equal weightage of marks is given to the first and second year of Higher Secondary public examinations (600 + 600 = 1200). So you need to get minimum 35 percentage to get pass mark. In order to perform well in the annual 12th public exam, you need to study hard by reading xii std samacheer kalvi books for theory and practical subjects.

https://www.tntextbooks.in/p/12th-books.html

Good Luck