Mexico's escalating war on drugs is supposed to be targeting the violent gangs running the trade, but in the city of Ciudad Juarez it is the children who are increasingly being caught up in the conflict.

Drug violence has spilled into the city's schools, playgrounds and streets.

Since 2006 more than 1,300 children have died in drug-related violence, according to the Mexican secretary of defence.

Meanwhile Mexico's National Institute of Criminal Science says the fastest growing rates of drug addiction are among children from 12 to 17 years old.

Al Jazeera's Mariana Sanchez visits a classroom to find out the hard facts of life for kids in Ciudad Juarez.