Excellent post, juneau
There was a report the other day that 10 000 children from this recent migrant crisis are now "missing": obviously, some of those will have been reunited with family etc, but it is undeniable that many will have fallen into the hands of organised crime and will be facing enslavement of some form, in many cases, sexual. Lone children are a positive "gift" to traffickers, unfortunately.
There's also the issue, where people lack documents for whichever reason, of "proving" age - it seems mostly to relate to young men, but during the Afghan War, for example, there were a number of cases where ages were claimed to be lower, so that the individual could get an education - and, of course, was harder to deport as a by-product.
The issue with UNHCR that misti mentions is a very real problem: the allocations to refugee families for a month are totally paltry, even allowing for differences in purchasing power parity, and the majority of countries (not the UK in this case) who have pledged money simply haven't followed through. Lebanon is already a volatile society because of its diversity, and the refugee population, through their very presence, has the potential to destabilise society further, unfortunately - and Jordan also has had a previous bad experience where a refugee population threatened to undermine and overwhelm the system (the period leading up to Black September): so it is not surprising that there are severe restrictions imposed by host governments in one way. But people in the camps should be a) allowed to make a decent living and b) be being prepared for "the day after".
The idea of retraining people where relevant, and of teachers teaching the Syrian curriculum is excellent - there is a huge body of evidence from Africa that shows that deskilling of refugees happens relatively quickly: even things like agricultural knowledge in formerly agrarian societies. It is vital both for the refugees and for the future of Syrian itself that skills and knowledge is preserved and built upon, so that when the war is over (and it will be over, eventually) they return to lives in which is it possible for them to live in prosperity.