obstacle to studying. according to unicef, nearly 120,000 children in venezuela could suffer from extreme malnutrition in the coming year. gilbenis s little sister giovanna is one of them. her hairfalling out from a lack of protein. their mother chiara is also severely underweight. the irony is that when nicolas maduro s predecessor hugo chavez came to power more than 20 years ago he promised a socialist revolution that would change the lives of millions in this deeply unequal country. and free education was a crucial part of his social programme. but much like the health care crisis in venezuela, schools here are also collapsing. bell rings. it s the start of a new day at this school close to the border with colombia. for head teacher raniela, thejob has now become her entire life.