A Birmingham MP will write to every secondary school in her constituency urging them to be alert for signs of bullying when the new school year begins.
Gisela Stuart (Lab Edgbaston) said youngsters could be vulnerable when they make the changeover from primary to secondary school.
She said: "It is one of the biggest concerns for parents and every time I hold an advice surgery, someone raises this.
"Schools do excellent work tackling bullying but I want to make sure they know it is a top priority."
She praised a scheme at Four Dwellings School, Quinton, which works with police to offer support to children at the college and at home.
The problems of bullying came to the fore in the wake of 15- year- old Anna- Marie Averill's suicide earlier this year.
Her family claimed she was bullied at Hillcrest School, Bartley Green, but the allegation was denied by education chiefs.
Birmingham's cabinet member for education, Coun Les Lawrence (Con Northfield), pledged to review every school's anti-bullying policy in response.
And 14-year-old Worcestershire pupil Amy Rose Tipton, from Kidderminster, took a fatal overdose of antidepressants last year after alleged bullying.
Ms Stuart said: "With the new school year coming, schools must waste no time.
"The move from primary to secondary school can leave pupils vulnerable, because friendship groups are broken.
"Parents and the community need to work together."