This study focuses on understanding how the brain functions in healthy children and how it relates to the intellectual potential of school-aged students, grades K-6. Previous research has revealed alterations in the electroencephalographic signal in children with intellectual disabilities, whether related to a medical condition or various neurodevelopmental syndromes. In contrast, studies focusing on children with high intellectual potential, defined by an intelligence quotient above average, have primarily examined differences in brain activity during specific mental efforts, such as solving complex math problems. However, research on the relationship between resting brain activity and level of intellectual functioning remains limited. Thus, the fundamental objective of this project is to deepen our understanding of the links between brain activity, measured by electroencephalography, and intellectual potential in school-aged children.