Allison Hu, Conner Morgan, Jack Smalligan and Kevin Yang each recieved a perfect score on the ACT last month.
Becky Balentine, Grissom High School principal, said "Allison, Jack, Conner and Kevin are examples of the academic excellence we see at Grissom."
"Our teachers have done a very good job at preparing us for college, for school and beyond," said Hu.
It is rare for a student to score a perfect score on the ACT. On average, more than two million students take the ACT each year. Fewer than 2,900 students are able to earn a perfect score.