Police say the pair snatched the girl near the intersection of Church Street and Hermosa Avenue as she walked home from school around 4:30 p.m. Tuesday.
According to investigators, the girl was thrown into a car, but she managed to get away.
"They were attempting to assault the female victim. She put up a struggle, continued to fight with the two suspects and fortunately was able to exit the vehicle unharmed," said Jodi Miller, San Bernardino County Sheriff's Department.
Computer-generated sketches of the suspects were created from the victim's description. Both suspects are believed to be between 17 and 18 years of age.
The first suspect is about 6' 1" and 220 pounds. He has brown eyes and three moles on his right cheek.
The second suspect is about 5' 7" and 170 pounds. He has hazel eyes and a three-inch scar on his left cheek.
The vehicle is described as a black Mitsubishi Eclipse with possible rear damage on the passenger side.
Rancho Cucamonga residents are on high alert following the attack.
Investigators are urging young girls who are going to school or leaving home to use the buddy system. They are advising girls to not venture out by themselves until the suspects are caught.
If you have any information regarding the case you're urged to call the Rancho Cucamonga Police Department at (909) 477-2800.
