Puducherry with 99.72 pass per cent topped the list of states and union territories in the CBSE class X results in the Chennai region, which were announced on Tuesday.
More than one lakh students out of the 1.05 lakh students who appeared for the exam passed, surpassing the previous year's record of 95.25 per cent, N Nagaraju, Joint Secretary, Chennai region, told reporters.
The Chennai region, comprising Andaman and Nicobar islands, Andhra Pradesh, Daman and Diu, Goa, Karnataka, Kerala, Lakshadweep, Maharashtra, Puducherry and Tamil Nadu, scored an 18-year high record of 95.60 pass per cent.
Kerala, Goa, Karnataka and Tamil Nadu also registered pass percentage of more than 98 per cent.
Kerala with 35,000 students had the maximum number of students who took the exams this year.