"I was like, 'You gotta be kidding'," the 21-year-old said.
Sipowicz, a senior at Canisius College, told BuzzFeed News that he was "kind of in a panic" after seeing the front of his car crumpled from an apparent hit-and-run.
"And that's when I saw the note," he said.
"I thought it was funny," he said, enjoying the young student's attention to detail.
"She made a dent and I saw what happened," the student said of the Buffalo Public Schools bus driver. "She hit and run."
"Sorry," another bullet point reads.
After posting the note and his damaged car on Twitter, it quickly went viral with many enjoying the young student's detail.
First Student, which owns the buses and employs the drivers, said in statement that it had met with Sipowicz to initiate an "insurance process" and stated that it will "cover the full cost of the repair".
"The actions of our former driver are completely contrary to First Student's training and what we stand for as a company," the company said. "We have initiated the process to terminate the driver."
The bus company also thanked the sixth-grader for her help.
"We would be remiss if we didn't mention that we are very impressed by this exceptional sixth-grader," First Student said.
"We commend her for her actions."
Sipowicz is keen to have a meeting with the student who the wrote note and reward the kid for their actions.
