Sekolah itu tidak punya guru tua lagi.

In Indonesian, demonstratives like ini and itu usually come after the noun.

• sekolah itu = that school / the school
• guru itu = that teacher / the teacher

So sekolah itu is the normal Indonesian order. In many contexts, itu can also make the noun feel more definite, so it can sometimes sound like the school, not just that school.

Because tidak is used to negate verbs, adjectives, and some other predicates, while bukan is mainly used to negate nouns or noun phrases.

Here, punya means to have, which is a verb, so:

• tidak punya = do not have

Compare:

• Sekolah itu tidak punya guru tua lagi. = That school no longer has old teachers.
• Itu bukan sekolah. = That is not a school.

So bukan punya would be wrong here.

Yes, punya is very common in everyday Indonesian and often means to have or to own.

So:

• Sekolah itu punya guru tua. = That school has old teachers.

However, punya is somewhat less formal than memiliki.

• punya = common, everyday
• memiliki = more formal, written, official

A more formal version of the sentence would be:

• Sekolah itu tidak memiliki guru tua lagi.

Both are understandable, but punya is extremely common in speech.

Because in Indonesian, adjectives usually come after the noun they describe.

So:

• guru tua = old teacher / old teachers
• rumah besar = big house
• buku baru = new book

This is the normal word order:

• noun + adjective

It can mean either, depending on context.

Literally, tua means old. So guru tua most directly means teachers who are old.

But in real usage, tua can sometimes suggest:

• older in age
• senior
• long-serving
• experienced

If the context is unclear, a learner should usually understand guru tua as old teachers, but native speakers may sometimes interpret it more broadly as older/senior teachers.

Lagi often does mean again, but with a negative sentence it commonly means anymore or no longer.

So:

• tidak ... lagi = no longer ... / not ... anymore

In this sentence:

• Sekolah itu tidak punya guru tua lagi.
• = That school no longer has old teachers.
• = That school doesn't have old teachers anymore.

This is a very common pattern in Indonesian.

Examples:

• Saya tidak bekerja lagi. = I no longer work.
• Dia tidak tinggal di sini lagi. = He/She doesn't live here anymore.

Indonesian nouns usually do not have to show singular or plural. So guru can mean:

• teacher
• teachers

The exact number depends on context.

In this sentence, English may translate it as old teachers because that sounds natural with the overall meaning, but grammatically Indonesian itself does not force singular or plural here.

If someone wanted to make the plural explicit, they could say:

• guru-guru tua = old teachers

But Indonesian often leaves this unmarked.

Indonesian does not use articles the way English does. There is no direct equivalent used in every sentence for a/an and the.

So:

• sekolah can mean a school or the school
• guru can mean a teacher, the teacher, or teachers

Context usually tells you which meaning is intended.

In this sentence, itu helps make sekolah more definite:

• sekolah itu = that school / the school

But guru tua does not need any article.

Yes. A very natural alternative is:

• Di sekolah itu tidak ada guru tua lagi.

This means roughly:

• There are no old teachers at that school anymore.

The difference is:

• tidak punya focuses on having
• tidak ada focuses on existence/presence

So:

• Sekolah itu tidak punya guru tua lagi. = That school no longer has old teachers.
• Di sekolah itu tidak ada guru tua lagi. = There are no old teachers at that school anymore.

Both are natural, though the version with ada may sound especially common in everyday speech when talking about who is present at a place.

Yes, it is complete and understandable. It sounds natural in everyday Indonesian.

That said, depending on context, some speakers might prefer slightly different wording, such as:

• Sekolah itu sudah tidak punya guru tua lagi.
• Di sekolah itu tidak ada guru tua lagi.

Adding sudah can make the no longer idea even clearer:

• sudah tidak ... lagi = already no longer ...

But the original sentence is still perfectly valid.

The structure is:

• Sekolah itu = subject/topic, that school
• tidak punya = negated verb, does not have
• guru tua = object, old teacher(s)
• lagi = anymore / no longer

So the sentence is basically:

• [Subject] + [not have] + [object] + [anymore]

In a word-by-word gloss:

• Sekolah = school
• itu = that / the
• tidak = not
• punya = have
• guru = teacher
• tua = old
• lagi = anymore / no longer

That gives:

• That school does not have old teachers anymore.