IDEA Full Funding Act - Amends the Individuals with Disabilities Education Act (IDEA) to reauthorize and make appropriations for the grant program to assist states and outlying areas in providing special education and related services to children with disabilities. Sets the amount to be authorized and the amount to be appropriated for each fiscal year from FY2015-FY2023 as the greater of:
Authorizes and appropriates funds for FY2024 and each subsequent fiscal year equal to the greater of a specified amount or 40% of the amount determined using such formula. Requires amounts appropriated to be expended consistent with pay-as-you-go requirements.