From http://www3.parinc.com/products/product.aspx?Productid=RIAS :
"Schools and institutions, clinical settings, and individual practitioners are all looking for ways to control costs and maximize professional time. Over the past few years, a clear need has emerged for a new, comprehensive, and cost-effective intelligence test--a high-quality, reliable instrument that provides the necessary information to help clinicians make decisions regarding classification, selection, and educational placement. The RIAS meets that need.
....Administering the complete RIAS (all six subtests) typically takes about 35 minutes."
If you don't agree with this test/report, you can as for an IEE.