"from a disadvantaged background" is correct and usable in written English.
You can use it when referring to someone's upbringing, usually in terms of social and/or economic disadvantages. For example: "He came from a disadvantaged background, but still managed to excel in school."
He comes from a disadvantaged background, went to Stanford University and got straight As.
This is obviously a massive issue for people like me because I'm from a disadvantaged background and area.
Here in Buckinghamshire we have a large, outstanding grammar that had just two children from a disadvantaged background in its 2014 GCSE cohort.
Providing great schooling is the single most important thing we can do to help any child from a disadvantaged background succeed.
The prospect of a $10 million payday could turn anybody's head, but that is especially true of a teenager from a disadvantaged background.
Analysis by the Sutton Trust reveals an interesting spectrum: an independent day school student is 22 times more likely to attend a Russell Group university than a state school student from a disadvantaged background.
I was also asked if I would cope if offered a place as I came from such a disadvantaged background.
So to truly see what my father achieved, from such a disadvantaged background economically and ethnically, and the challenges he took on over and above that – facing down a massive oil multinational, a military dictatorship.
"Here there is a strong case to offer a place with one or two lower A-level grades to students from a particularly disadvantaged background knowing that, on average, their achievement would at least match that of an independent school individual".
They all appear to treat each other equally, seemingly barely noticing if a child they are talking to or playing with has a disability or is from a more disadvantaged background than they are.
I am Hispanic and come from an economically disadvantaged background.
