YA Dystopian. Teens study in one field and then test to determine what area they go to for "careers". Girl tests a lot lower than expected, possibly test results tampered with?

[Natasha]

I didn't actually read this book, I only read a blurb advertised on facebook and forgot to write the name down, so I am not sure of all the details. But essentially a group of teens has been studying in certain fields to test as high as possible, they are sorted into the fields they excelled in (health care, industrial, etc.) One girl who expects to test really high tests very low, the lowest in the group I believe, and gets sent to the group of 'misfits' i think. They might be fighters or assassins or something. I'm not sure. They're a rough bunch though, and the girl is very unhappy. Her test results may have been messed with, so some sort of conspiracy. I saw the add within the last year. Thanks.

[Belén]

This sounds a little bit like "Divergent" but they get sorted into factions, not careers.
The heroine chooses to go into the "Fighter" faction.
Her test results are hidden because she is different from the rest.

[Cupcakedoll]

Probably not it, but this does have testing and a girl who gets a low score.

[Natasha]

Neither Pawn or Divergent. Thanks guys!

[Minnikin]

The Testing by Joelle Charbonneau?

[Bargle]

Link The Testing by Joelle Charbonneau.

[Robert]

Skyward also has similar elements

[Stacey]

The Forsaken?

[Stacey]

or Matched?