This is the 43rd most frequent Indonesian word.
ia
"He, she, or they" (third-person singular pronoun).
In this sentence, 'ia' refers to a third person singular subject, equivalent to 'he' or 'she' in English.
Ia suka membaca buku.
He/She likes reading books.
Here, 'ia' denotes the subject who is performing the action of going to school, showing commitment or perseverance.
Meskipun hujan, ia tetap pergi ke sekolah.
Despite the rain, he/she still went to school.
In this context, 'ia' indicates the subject arriving somewhere, placing emphasis on the timing of events.