Police said, one of the deceased identified as Rohit Kumar Meena (17) was a student of Dwarka's M.R. Vivekananda Model School.
Meena scored 59 per cent in the board exam, he was a resident of Kakrola area and committed suicide in his room. He was rushed to a local hospital where she was declared brought dead.
According to police, they got a call around 3.45 p.m. regarding the incident, no suicide note was recovered but police suspect he was upset over the results.
In the second incident, a student, Pragya Pandey, 15, who stayed in south Delhi's Vasant Kunj area, was found hanging with a ceiling fan at her residence.
"She was a student in Ryan School, she got 70 per cent marks. She wanted to pursue science and could not get due to low percentage," said a senior police officer.
Due to the same, she committed committed suicide by hanging herself with a ceiling fan, he said.
Her father works as enforcement officer in ED, he added.