Shelly Mesch and Bill Novak:

The school district screened students entering the school Thursday and Friday with metal detector wands as a precaution following the shooting. Joe Balles, safety and security coordinator for the school district, said screening will not need to continue next week but there will be screening for students entering Saturday’s Homecoming dance.

The arrests were made by the Police Department’s violent crime unit.

The shooting was the second near La Follette in a week. On Sept. 19, a 15-year-old boy on a Metro Transit bus near the school injured two 16-year-old students when a gun he had accidentally fired. The 15-year-old, who was arrested the next day, was not a student at La Follette. A district spokeswoman would not say what schools the three attend.

Related: Gangs and school violence audio video.