An intellectual disability is defined as significantly below average general intellectual and adaptive functioning existing concurrently [at the same time] with deficits in adaptive behavior and manifested during the developmental period, with significant delays in academic skills. Developmental period refers to birth to eighteen (18) years of age. 

This classification represents those students previously identified as: Educable Mentally Handicapped (EMH), Trainable Mentally Handicapped (TMH), and Profoundly Mentally Handicapped (PMH)

The corresponding definition is found in State Board of Education Rule 6A-6.0311, F.A.C.