The District 150 school has earned a "blue ribbon" for academic excellence.
To qualify, students met adequate yearly progress, which evaluates reading and math skills.
They also scored well on the Illinois Standard Achievement Test.
While more than half of Charter Oak students do come from low income homes, Principal John Wetterauer hopes this honor helps them realize anything is possible when they put their minds to it.
"Meeting the individual needs of those students," stated Wetterauer. "Whether it is acceleration or intervention, focusing first on the core and then from there developing a plan of action for where the kids need to go."
Staff members say teaching children in small groups helps more of them succeed.
Charter Oak is one of only 16 Illinois schools to receive this national distinction.