This publication resulted from an investigation by the Government Accounting Office (GAO) into alleged inaccuracies in a National Science Foundation (NSF) report "Pre-college Science Curriculum Activities of the National Science Foundation." Five NSF supported curriculum improvement projects were investigated. Generally, inaccurate and unsupported statements resulted from lack of thorough investigative techniques in determining facts, proper standards for supporting documentation, and/or adequate controls for review and revision of draft case studies according to this GAO report. The question was raised in Congress, and is raised in this document, as to the possible withholding of information and review team findings by NSF. This report concludes that NSF was negligent in responding to congressional concerns about NSF administration of precollege curriculum projects. This report also points out that NSF has implemented most of the recommended administrative changes it has received resulting from this controversy. (MR)