The deceased was identified as Mahmuda Khanam, 43, wife of Mahbub Alam of Hajiganj in Chandpur.
Schoolteacher Asadduzaman said Mahmuda was hit by a three-wheeler at 6pm in front of the school gate when she was going home after the police promotion exam.
Locals initially took her to 300-bed Hospital. She was later shifted to Dhaka Medical College Hospital where doctors pronounced her dead around 7:30pm.
The body was kept at DMCH morgue for autopsy, said Bacchu Mia, in-charge of DMCH police outpost.