YA MC is living at a school on island with trackers ( like an experiment?? )

[icarus]

i really can’t figure it out..

[Ingo]

Some list with Lord of the Flies (no tracker imho, too old) and / or Battle Royale might help finding this book.
Battle Royale has the kids wearing trackers with explosives round the neck.

[Rainbowheart]

When did you read it?

Is the MC male or female?

[Jessica (Goldenfurpro)]

It's been awhile since I've read it, but Variant?