Mom of Chicago private school boy, 15, driven to suicide by bullies over lie he was unvaccinated calls for former school head to be axed from his new $1M-a-year post at top NY school 

Rosellen Bronstein demanded fromer Latin School of Chicago Principal Randall Dunn be canned from his new job at a prestigious NY private school

Bronstein claimed Dunn failed to help her son, Nate, 15, who comitted suicide in January after months of relentless bullying at his school

The grieving mother said her son would still be alive if not for Dunn and fears he would let down the students at the Rye Country Day School, in Westchester

She and her husband are suing Dunn and the Latin School for $100 million

They claim the school ignored Nate's bullying after false rumors spread that he was unvaccinated and had been humiliated by a teacher in front of his class