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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
no random tests
'students' property of classes objects hold an array of 'id' values (your 'item' variable): a number referering to the 'id' property of the students objects listed in the array of students object given as second argument... you should search and find inside the object with the related 'id' property, not acccess the 'students' array directly with it (this is not an index).
This comment is hidden because it contains spoiler information about the solution
new line is supposed to be "\n"
Not only that, there's only one test, and it's the same as the example. It would be trivial for someone to return the example solution and pass.
You need more test cases, including edge cases (no classes, no students, what about missing student IDs?). Randomized test cases.
Are you trying to escape newlines? Escaping in JavaScript is
"\n", not"/n".