هي بتشتغل في مدرسة كبيرة.

هي means she.

In Egyptian Arabic, subject pronouns are often optional because the verb already gives clues about who the subject is. So:

• هي بتشتغل في مدرسة كبيرة
• بتشتغل في مدرسة كبيرة

can both mean She works in a big school.

Using هي makes the subject extra clear or slightly more emphasized. A learner will often hear both versions.

بتشتغل means she works or she is working, depending on context.

It comes from the verb اشتغل / يشتغل, which in Egyptian Arabic commonly means:

• to work
• to be working
• sometimes to function / operate for machines, depending on context

In this sentence, it clearly means she works.

In Egyptian Arabic, the prefix بـ is very common in the present tense. It usually marks a habitual or ongoing present action.

So بتشتغل is built like this:

• بـ = present/imperfect marker
• تـ... = part of the conjugation pattern for she / you
• شتغل = the verb root/pattern meaning work

In everyday Egyptian Arabic, بـ often corresponds to English works / is working / does work, depending on context.

That is a normal part of Arabic verb conjugation.

In the present tense, she often takes the prefix تـ. So:

• أنا بشتغل = I work
• إنتَ بتشتغل = you (masculine) work
• هي بتشتغل = she works
• هو بيشتغل = he works

So the تـ here does not mean you by itself. The full form and context tell you the meaning.

في usually means in.

So:

• في مدرسة = in a school

In this sentence, في shows place or location: she works in a school.

Very often, في is one of the first prepositions learners meet because it is extremely common in Egyptian Arabic.

مدرسة means school.

The ending ـة is very common on feminine nouns in Arabic. This ending is often called taa marbuuTa in grammar discussions.

So مدرسة is a feminine noun, and that matters because adjectives must agree with the noun in gender.

That is why the sentence says:

• مدرسة كبيرة = a big school

not مدرسة كبير.

In Arabic, adjectives usually come after the noun they describe.

So:

• مدرسة كبيرة = literally school big
• natural English meaning: a big school

This is a very important word-order pattern in Arabic:

• ولد طويل = a tall boy
• بنت صغيرة = a small girl
• مدرسة كبيرة = a big school

Because مدرسة is a feminine singular noun, the adjective must match it.

So:

• masculine singular: كبير = big
• feminine singular: كبيرة = big

Since school = مدرسة is feminine, the adjective must also be feminine:

• مدرسة كبيرة

This matching is called agreement.

No. Arabic does not have a separate word exactly like the English indefinite article a / an.

So:

• مدرسة can mean a school
• مدرسة كبيرة can mean a big school

If you wanted the big school, you would usually add الـ to both the noun and adjective:

• المدرسة الكبيرة = the big school

That is a very important pattern:

• indefinite: مدرسة كبيرة
• definite: المدرسة الكبيرة

A common pronunciation is:

Heyya bitishtighal fi madrasa kibiira.

You may also see slightly different transliterations, such as:

• Hiyya biteshteghal fi madrasa kebeera
• Heyya btishtaghal fi madrasa kibiira

That happens because transliteration is not fully standardized.

A few pronunciation notes:

• هي is usually pronounced something like heyya or hiyya
• بتشتغل often sounds like bitishtighal / bteshteghal
• كبيرة is commonly pronounced kibiira or kebeera in transliteration

It can mean either one, depending on context.

In Egyptian Arabic, the present form بتشتغل can cover both:

• She works in a big school
• She is working in a big school

If you are talking about her job in general, English usually uses she works.

If the conversation is about what she is doing nowadays or currently, English might use she is working.

So the Arabic form stays the same, and context tells you which English meaning fits best.

Yes. In natural English, both in a big school and at a big school may be used depending on context.

The Arabic preposition في literally means in, but when translating into English, at is often more natural with workplaces, schools, and institutions.

So this Arabic sentence may be translated naturally as either:

• She works in a big school
• She works at a big school

The exact English wording depends on style and context more than on a different Arabic structure.