Triplet Isabelle Tezsla was killed and sisters Natalie and Sophie were severely injured in Thursday's crash. Their father, Anthony Tezsla, is a state police sergeant.
Natalie remains in stable condition, while Sophie and classmate Jonathan Zdybel are still listed in critical condition.
In a statement issued Tuesday, the Tezsla family said the outpouring of love and support has touched them profoundly. They also thanked rescue workers, doctors and nurses for their efforts.
The National Transportation Safety Board is investigating the crash between the bus and a dump truck in Chesterfield. No charges have been filed against either driver.
CLICK HERE TO SEE PHOTOS FROM THE SCENE (Souce: WPVI-TV)
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