Apologies if some of my links are broken/wrong- my address bar seems to have frozen/broken so copying and pasting may not be quite accurate.
Free will as in determinism/preordained destiny* or free will as in wilful (and as it is a film the full phrase is probably something like wilful against overwhelming odds)?
It gets quite difficult for the determinism part as it is a somewhat unpopular theme (most of the things I see tend to be sci fi TV shows), the latter is more popular as everybody loves visions.
*I am thinking physics (usually multiple universes type thing- possibly something like The One)
More commonly time travel
12 Monkeys
Primer explores it extensively.
Dark Country
Supernatural can also work
Triangle
http://www.imdb.com/title/tt1187064/ actually references various pieces of Greek/Roman underworld mythology which is a great fan of such things) there rather than the rather more loose but infinitely more popular seer/vision/prediction via wizard/wise man/similar or madman.
If you want to go basic Hollywood then Push (
http://www.imdb.com/title/tt0465580/ ) works quite well.
The overwhelming odds is almost a cliché at this point in time so I will leave that one to you.
If you were bored there is a fourth type about people railing against "their destiny to be a nobody" or more realistically the unrelenting horror that is suburbia (sociologically and for many psychologically speaking suburbia is horrific- it might be a bit strong for a school report but Ken Park does that quite nicely
http://www.imdb.com/title/tt0209077/
I could spin it a fifth time and got the 24 hours to live type of thing- you could go for something simple lift Zift of Crank or spin it again and go for something like city of lost children, dark city or a further time and go for something like operation endgame, smokin aces another time for things like Blade runner.
A final time might be for the stories from multiple angles routine (often a historical story)- they usually start at the end (or close to it) and cover various things getting to there. I admit it is a stretch but do it well and it will be good, stuff like Thursday
http://www.imdb.com/title/tt0124901/ (if you can find it) work well.
Hope you find something.