Lillebroren min går på skolen.

In Norwegian, lillebror is a fixed family word meaning younger brother.
It is built from:

• lille = little/small
• bror = brother

But together, lillebror usually means younger brother, just like storebror means older brother.

So Lillebroren min is normally understood as my younger brother, not necessarily a brother who is physically small.

Both are possible, but they are used a little differently.

• lillebroren min = the most common, neutral way to say my younger brother
• min lillebror = also correct, but often sounds a bit more emphasized or formal

Norwegian often places the possessive after the noun:

• boka mi = my book
• huset vårt = our house
• lillebroren min = my younger brother

When the possessive comes after the noun, the noun is usually in the definite form.

The ending -en is the definite singular ending for many masculine/common-gender nouns.

• en lillebror = a younger brother
• lillebroren = the younger brother

Since the possessive min comes after the noun, Norwegian normally uses the definite form:

• lillebroren min = my younger brother

So the structure is basically:

• lillebroren = the younger brother
• min = my

Together: the younger brother of mine = my younger brother

Because Norwegian often adds definiteness as an ending on the noun instead of using a separate word.

Examples:

• en skole = a school

• skolen = the school

• en bror = a brother
• broren = the brother

So in this sentence:

• lillebroren already means the younger brother
• skolen already means the school

English uses a separate word, but Norwegian often uses a suffix like -en, -a, or -et.

No. In this sentence, går på skolen is an idiomatic expression meaning:

• goes to school
• attends school

The verb gå literally means go or walk, but in many everyday expressions it is broader than just walking.

So here:

• Lillebroren min går på skolen = My younger brother goes to school / attends school

It does not mean he is physically walking on top of the school.

Because Norwegian often uses på with schools and some other institutions in set expressions.

Common examples:

• gå på skolen = go to school / attend school
• være på skolen = be at school
• jobbe på skolen = work at the school

This does not translate word-for-word into English. You just have to learn it as the normal Norwegian pattern.

So even though på often means on, here it is simply the correct preposition in the expression.

This is a very common difference between English and Norwegian.

English often says:

• go to school
• be at school

Norwegian very often uses the definite form:

• gå på skolen
• være på skolen

So skolen can correspond to English school in this kind of general institutional meaning.

In other words, Norwegian may use the definite form where English does not.

Går is the present tense of the verb å gå.

• å gå = to go / to walk
• går = go/goes/am going/is going/are going, depending on context

Examples:

• Jeg går = I go / I am going
• Han går = he goes / he is going

In this sentence:

• Lillebroren min går på skolen = My younger brother goes to school

Also, å gå is an irregular verb, so it does not follow the simplest regular pattern.

Not exactly. On its own, går på skolen most naturally means:

• goes to school
• attends school

If you want to say is at school, Norwegian would more naturally use:

• Lillebroren min er på skolen.

So:

• går på skolen = goes to school / attends school
• er på skolen = is at school

Context can sometimes blur things a little, but this distinction is useful and important.

Yes, absolutely. That sentence is correct.

Compare:

• Lillebroren min går på skolen = the most natural everyday wording for many speakers
• Min lillebror går på skolen = also correct, often with slightly more focus on my

Both mean the same thing overall.

This is a common Norwegian pattern:

• boka mi / min bok
• vennen min / min venn
• lillebroren min / min lillebror

The version with the possessive after the noun is usually the more neutral everyday choice.

A rough pronunciation guide is:

LIL-le-broo-ren meen gor po SKOO-len

A few notes:

• lillebroren has stress mainly on the first part: LIL-lebroren
• min sounds like meen
• går has a long vowel sound somewhat like gor in many English-friendly approximations
• skolen is roughly SKOO-len

A more natural connected pronunciation may sound smoother than the spelling suggests, especially in casual speech.

The sentence follows normal Norwegian main-clause word order:

• Lillebroren min = subject
• går = verb
• på skolen = prepositional phrase

So the pattern is:

Subject + Verb + Other information

That is very similar to English here:

• My younger brother
  • goes
    • to school

So the sentence is grammatically simple in word order, even though some details like definite forms and på skolen work differently from English.