evidence: CBSE Class XII rose to 99.9 % from 97.9% last year, the second best among the regions after Thiruvananthapuram. The government schools of Chennai also had the same pass percentage. Like last year, the government schools in the capital did better than private institutions, though the margin was lower this year. [...] "Congratulations to Delhi government school students, teachers and parents," the CM’s tweet said. "875 schools have 100% results this year, last year it was 396. 885 students scored above 95%, last year it was 442. It’s historic." Deputy CM and education minister Manish Sisodia tweeted, "Congratulations team education Delhi. You are rocking for last few years. What a wonderful progress card." [...] The pass percentage of Delhi government schools has steadily risen from 90.2% in 2018. The quality index too increased from 341.8 last year to 350.8 this year. The quality index reflects the performance of the students in relation to the aggregate marks scored by them, not just the pass percentage. In gender terms, 99.6% of the girls cleared Class XII, while e99.7% of the boys did the same.