From what i noticed when i lived there. Pronouncing it as it is written is good. But various accents can add slight phonetic vowel glides.
"She is in school " = accepted now.
I see the following answers being suggested as well :
"She is at the school"
"She is in the school"
My English teacher taught me that the article was not needed.
The dictionaries that I use, also don't use the definite article.
My question is :
Is it grammatically correct to use the definite article here ?
If yes, what is the difference in meaning when using/omitting the definite article ?
It's still correct English, but the meaning is different. 'At school' means she is attending class, while 'at the school' means she is physically present at a specific school.
Since you could say 'dia di sekolah' and it would have the same meaning, i assume adding 'ada' underlines that he/she IS at school? am i right?
I think you should read the following (source : Cambridge Dictionary) :
Here is another definition (source : Oxford Dictionary) :
The definite article is not used in their examples.