Dinsdag ga ik naar school.

Because Dutch main clauses follow the verb-second (V2) rule.

That means the finite verb must come in the second position of the sentence. If you put Dinsdag first, then the verb ga has to come next, and the subject ik comes after it.

So:

• Ik ga dinsdag naar school.
• Dinsdag ga ik naar school.

Both are correct, but the word order changes because of the V2 rule.

Yes, absolutely.

Both of these are correct:

• Ik ga dinsdag naar school.
• Dinsdag ga ik naar school.

The difference is mainly focus:

• Ik ga dinsdag naar school = neutral word order
• Dinsdag ga ik naar school = puts extra emphasis on Tuesday

English often does something similar with stress rather than word order.

In Dutch, you often do not need a preposition before days of the week when talking about a specific day.

So English on Tuesday is often just:

• dinsdag

That is why Dinsdag ga ik naar school is natural Dutch.

You can sometimes use op, especially in some contexts, but with a specific day it is very common to leave it out.

Naar usually means to or towards when there is movement in the direction of a place.

So in:

• ga ik naar school

naar school means to school.

It is the normal preposition used with gaan when you are going somewhere:

• Ik ga naar huis = I’m going home
• Ik ga naar Amsterdam = I’m going to Amsterdam
• Ik ga naar school = I’m going to school

Because naar school is a very common fixed expression meaning to school in the general sense, especially as a student going there for school.

Compare:

• Ik ga naar school = I’m going to school
• Ik ga naar de school = I’m going to the school/building

So without the article, it often means the institution or usual activity.
With the article, it sounds more like you are going to a specific building.

This is similar to English:

• go to school
• go to the school

Ga is the present tense singular form of the verb gaan (to go).

Conjugation:

• ik ga = I go / I am going
• jij gaat
• hij/zij/het gaat
• wij gaan
• jullie gaan
• zij gaan

So in the sentence:

• Dinsdag ga ik naar school

ga is the verb form that matches ik.

It is capitalized here because it is the first word of the sentence.

In Dutch, days of the week are normally not capitalized unless they begin a sentence.

So:

• Dinsdag ga ik naar school.
• Ik ga dinsdag naar school.

In the second sentence, dinsdag is lowercase.

This is different from English, where Tuesday is always capitalized.

By itself, dinsdag usually means Tuesday, and the exact meaning depends on context.

In a sentence like:

• Dinsdag ga ik naar school

it often means something like:

• On Tuesday I’m going to school
• possibly this/next Tuesday, depending on the situation

If you want to be clearer, Dutch can use extra words:

• aanstaande dinsdag = next Tuesday / this coming Tuesday
• afgelopen dinsdag = last Tuesday
• elke dinsdag = every Tuesday

Usually, if you mean a habit, Dutch more often says:

• Elke dinsdag ga ik naar school. = Every Tuesday I go to school.
• Op dinsdag ga ik naar school. = On Tuesdays / On Tuesday I go to school.

Without extra context, Dinsdag ga ik naar school often sounds more like a specific Tuesday than a repeated habit.

So if you mean repetition, it is better to say elke dinsdag or sometimes op dinsdag.

In Dutch word order, ga ik does not automatically mean a question.

In this sentence:

• Dinsdag ga ik naar school.

it still means:

• I go / I’m going

It is a normal statement, not a question, because the sentence does not have question intonation and starts with the time expression Dinsdag.

Dutch often puts the verb before the subject in statements when something else comes first:

• Vandaag ben ik thuis.
• Morgen ga ik werken.
• Dinsdag ga ik naar school.

So ga ik here is just normal Dutch word order, not am I going?

You technically can, but it is much less neutral and sounds marked or literary in many contexts.

The most natural versions are:

• Ik ga dinsdag naar school.
• Dinsdag ga ik naar school.

Putting naar school first gives it strong emphasis, as if contrasting it with something else:

• Naar school ga ik dinsdag, niet maandag.

So for everyday Dutch, stick to the more common word orders above.

Yes. A useful way to see the structure is:

• Dinsdag = time expression
• ga = finite verb
• ik = subject
• naar school = place/direction

So the pattern is:

time + verb + subject + rest

This is very common in Dutch when you want to start with a time word:

• Morgen ga ik werken.
• Om acht uur vertrek ik.
• In de zomer wonen wij in Spanje.

So this sentence is a very typical Dutch sentence pattern.