This is the 438th most frequent Hungarian word.
akiket
"Akiket" means "whom" (used for those whom the action is directed at).
Here, 'akiket' functions as a relative pronoun used to introduce a subordinate clause that provides more information about the antecedent 'emberek' (people).
Ők az emberek, akiket meghívtunk vacsorára.
They are the people whom we invited for dinner.
Here, 'akiket' introduces a relative clause giving additional information about 'barátok' (friends) as the direct objects of the action 'segítünk' (help).
Ők azok a barátok, akiket mindig segítünk.
They are the friends whom we always help.
In this sentence, 'akiket' stands as a relative pronoun referring back to 'iskolások' (schoolchildren) specifying who were recognized after the competition.