KNOXVILLE, Tenn. (WVLT) -- Questions remain about the death of an autistic 17-year-old who died after an accident at a Knox County school.

Karns High School senior Eric Law died Monday after falling from the back of a pickup truck while helping other students move furniture the previous Wednesday.

Attorney Greg Isaacs delivered a letter (READ THE LETTER) to the school superintendent and the county law director asking why the students were in the back of a truck moving furniture and why no one at the school called 911 after Eric suffered a serious head injury.

Eric Law's senior portrait arrives at his mother's house a day after his death.

Isaacs says, “Unfortunately, Ms. Law entrusted him to the school system and thought he was there to get an education, and the next thing you know the students are riding around in the back of a truck."

Law family attorney Greg Isaacs says the autistic 17-year-old was in the back of the truck helping move furniture from the vocational center next door to the high school. Isaacs says when the truck slowed, Eric was thrown to the pavement. He was in and out of consciousness when his mother arrived at the school. But she had to take him to the hospital in her own car. Within 15 minutes of his arrival, he was in surgery for a serious head injury.

Isaacs says, "We're looking into how long Mr. Law remained on the pavement after he exited the vehicle. We do know that 911, nor other medical providers were contacted by Karns."

Isaacs says the teacher and a supervisor approved the furniture moving. David Boggan and Doyle Schultz have been placed on leave with pay while the schools investigate. We reviewed both employees' personnel files. We did not find evidence of any prior disciplinary actions. The school superintendent says, the schools are mourning the loss of a student, and continuing to examine their own rules.

Knox County Schools Superintendent Dr. Jim McIntyre says, "When something as tragic as this happens, we also look clearly and closely at all of our policies and procedures to make sure they are as tight as they can be. We take our students' safety very seriously."

Isaacs says another key question is why did the schools wait until the day after the accident to contact the sheriff's department. As he looks for answers, he'll also be looking closely at a number of school policies.

Funeral arrangements are set, and the family will receive friends Thursday from 5:30 p.m. to 7:15 p.m. at Click Funeral Home's Farragut chapel, with the service to follow at 7:30 p.m.