The attempted kidnapping happened around 8:20 a.m. Wednesday as the teen was walking to L.A. River High School in the area of Cypress Avenue and Silver Street.
The suspect is described as a Hispanic male about 25 to 30 years old.
He is about 5 feet, 7 inches tall and 180 pounds, with brown eyes and acne or chicken pox scars on his face.
His vehicle is described as a red Toyota-style pickup truck with faded paint and metal objects loaded in the rear.
Anyone with information is asked to call police at (323) 344-5741.