"Siswa-siswa saya ada yang beragama Islam, Katolik, dan Hindu."

Translation: My students are Muslims, Catholics, and Hindus.

[XavierLamb9]

So is ada yang used the same way as adalah in this sentence?

[PetaniKucing]

Not really. I think the most literal translation of this sentence is "My students, there are [those/some] who are Muslim, Catholic, and Hindu.".

[widiwkr]

It is more suitable if you remove 'yang'. Because this whole sentence have closer meaning to 'There are my students who are Muslims, Catholics, and Hindus.'

[widiwkr]

Correction. Remove 'ada yang' instead.