A monumental centennial milestone awaits as Rialto Unified School District’s Rialto Middle School (RMS) prepares to celebrate its 100th Anniversary, honoring a century of educational excellence and community engagement. The grand celebration, themed “Celebrating 100 Years of Integrity and Determination,” is scheduled for Thursday, October 10, 2024, from 4:30 p.m. to 7:00 p.m. at RMS, located at 1262 W. Rialto Avenue in Rialto.