The Gun Free Schools Act (GFSA) requires states to report information about the implementation of the act annually to the Secretary of Education. This report starts by presenting information on data interpretation and quality. Three sections summarize the 1998-99 data submitted by the states. The first section is a brief summary of the overall findings. The second section presents a summary of the 1998-99 data in bulleted, graphic, and tabular form as well as a comparison between the 1998-99 and 1997-98 data. The tables in this section contain data notes that are critical to the correct interpretation of the data. The third section presents a page for each state, each of which contains the data submitted by the state, as well as any caveats or data notes. Appendix A contains a copy of the Gun-Free Schools Act, and Appendix B is a copy of the 1998-99 GFSA state data-collection instrument. This publication is not designed to report the rate at which students carry firearms to school but instead reports the actions taken in regard to the number of students caught bringing firearms to schools. (RT)