Brisbane students are being warned about accepting a lift from a woman posing as a teacher and wanting to take them to school.
Police say the woman, aged in her 30s and described an Asian in appearance, has approached three students in two separate recent incidents offering to give them a lift.
On one occasion she told two students, aged 17 and 15, she was a teacher at their southern Brisbane school.
In the other incident, the motorist drove up to a 12-year-old girl at Macgregor and signalled for her to get inside to talk.
Police have advised students to be careful when walking to and from school and not accept lifts from anyone they don't know.