This is the 16839th most frequent Turkish word.
zorundadırlar
"They are obliged."
This illustrates an obligation or necessity for the students to take action.
Öğrenciler, sınavlarını zamanında teslim etmek zorundadırlar.
The students must submit their exams on time.
This usage establishes that following traffic laws is a common obligation.
Herkes trafik kurallarına uymak zorundadırlar.
Everyone must obey traffic rules.
Here, the phrasing indicates the responsibility parents have towards their children's education.