A bill to encourage States to require a holding period for any student expelled for bringing a gun to school.

Requires that the amount that would otherwise be allocated to a State in grants for State and local governments for juvenile delinquency-related programs and programs to improve the juvenile justice system under the Juvenile Justice and Delinquency Prevention Act of 1974 be increased, for FY 2000 and thereafter, by 25 percent if a State law requires that: (1) any administrator or employee of a public or private school who has reasonable cause to believe that a student is or has been in possession of a firearm while in or on the premises of a school building in violation of Federal or State law immediately report the student's conduct to an appropriate law enforcement agency and to an appropriate juvenile department or agency of the State; (2) upon receipt of such report, the law enforcement agency immediately cause an investigation to be made to determine whether there is probable cause to believe that the student, while in or on the premises of a public building, possessed a firearm in violation of Federal or State law; (3) if a determination of probable cause is made, the student immediately be detained by the law enforcement agency for not more than 72 hours in an appropriate juvenile justice setting for psychological evaluation and a judicial determination regarding whether the student is a danger to himself or herself or to others, and a parent, guardian, or other adult with responsibility for the student be notified of that detention and its purposes; and (4) if the court makes a determination that the student is a danger, the student be placed in an appropriate juvenile justice setting to receive professional psychological counseling.

Authorizes appropriations.