Live chat with Kristen Graham on Philly schools

In four separate attacks this school year, classroom assistant Tracee Sigler was cut, punched, kicked and stabbed. She required hand surgery after an attack by a 5-year-old at Dobson Elementary. Sigler quit and moved out of state. (Jeff Leo/For the Inquirer)

Join Inquirer schools reporter Kristen Graham for a chat at 4 p.m. Tuesday on the Assault on Learning investigative series. On a mobile phone? Click here to join the chat. Find the series here.