Achilles works with a group in North Carolina called Solace for the Children, which brings children from Afghanistan to the United States for medical treatment.
The other is Nourish the Children, which aims to obliterate child starvation all over the world.
Save the Children, which supports Atlanta, makes a distinction between child labour and "child work", which can give children income, skills and self-confidence without damaging their schooling.
Since the programme began in March 2012, more than 3,000 children have been educated, according to Save the Children, which is implementing the UNICEF project.
Maria spoke about her daily life to Save the Children, which has launched a campaign to target child poverty in the UK.
A spokesman for Save the Children, which provides childcare in the centre, said child protection was the organisation's "No 1 priority" on Nauru.
Failed by diplomacy, these children are being cared for by organisations including Unicef and Save the Children, which are doing extraordinary work.
We are trying to protect the children, which is why I'm asking Congress to act.
Three days in, they let me phone the children, which was unspeakably painful.
The same goes for bringing up the children, which they did together.
Tells fathers annual address to the children which is incomprehensible run-on sentences amounting to nothing.
