The school bus, carrying children aged five to 10, crashed at about 16:00 local time on November 21.
Images from the scene showed the bus wrapped around a tree, with its metal roof split in two.
Chattanooga police Chief Fred Fletcher said that 24-year-old Johnthony Walker was charged with five counts of vehicular homicide.
Johnthony Walker was also charged with reckless driving and reckless endangerment.
“Speed is being investigated very very strongly as a factor in this crash,” Fred Fletcher said.
He said it was a complicated crime scene, but conditions “appeared to be clear and dry”.
Investigators believe the bus may have hit a utility pole before colliding with the tree, the police chief added.
Johnthony Walker, who survived the crash, was being questioned and was co-operating with investigators, police said.
A spokeswoman for the district attorney said five children were found dead on board the bus after the crash, and another child had died in hospital.
She said 35 children had been on board the bus. Chattanooga Fire Department also said 23 children had been taken to hospital by ambulance.
Local blood bank Blood Assurance called for blood donations following the crash.
A reporter for the local news channel tweeted that queues to donate were “out the door” and the office was taking appointments for the following morning.
Chattanooga Mayor Andy Berke asked concerned parents to go to the elementary school for information, and not the crash site.
Sydney has welcomed 2025 with a spectacular fireworks display - cheers erupted as the clock struck midnight…
Following an eight-year legal battle, Angelina Jolie and Brad Pitt have reached a divorce settlement,…
Former President Jimmy Carter died on December 29 at the age of 100 after spending several…
Georgia’s outgoing president Salome Zourabichvili refused to step down on December 29, saying she was…
The bald eagle has been officially declared the national bird of the United States, after…
Dozens of passengers have survived a crash involving a plane carrying 69 people in Kazakhstan,…