Individualized Education Programs (IEPS) and 504 Plans both offer assistance to students in grades K-12 who have learning, behavior, and attention issues and deficits. Below is a link from Understood.org that contains an informative chart that highlights some key differences between IEPs and 504 Plans including key differences in what each does, who is eligible, what law applies, parental involvement, etc.
For more information on the key differences between IEPs and 504 Plans click the link below: