Hoy lleva uniforme azul y zapatos negros para ir al colegio.

In Spanish, llevar has several meanings. One very common use is to wear when talking about clothes, shoes, accessories, etc.

So:

• Lleva uniforme azul = He/She is wearing a blue uniform
• Lleva zapatos negros = He/She is wearing black shoes

The same verb can also mean to carry or to take, but the context tells you which meaning is intended. Since the sentence mentions clothes and shoes, wearing is the natural meaning here.

For example:

• Lleva una mochila = He/She is carrying a backpack
• Lleva una chaqueta roja = He/She is wearing a red jacket

Spanish often leaves out subject pronouns when they are not needed. The verb form lleva tells you it is he, she, or you (formal singular).

So this sentence could mean:

• Today he is wearing...
• Today she is wearing...
• less commonly, Today you are wearing... in a formal context

Spanish does this all the time because the verb ending usually gives enough information.

Compare:

• Yo llevo = I wear / I am wearing
• Tú llevas = you wear / you are wearing
• Él/Ella lleva = he/she wears / is wearing

After llevar when talking about what someone is wearing, Spanish often leaves out the article.

So both are possible, but they are not exactly the same:

• Lleva uniforme azul = He/She is wearing blue uniform / a blue uniform
• Lleva un uniforme azul = He/She is wearing a blue uniform

The version without un is very common when simply describing clothing in a general way.

The version with un sounds a bit more specific or countable, as if you are emphasizing a particular uniform.

This article omission is common with clothes:

• Lleva gafas = He/She is wearing glasses
• Lleva sombrero = He/She is wearing a hat
• Lleva chaqueta negra = He/She is wearing a black jacket

Adjectives in Spanish usually agree with the noun they describe in number and sometimes in gender.

• uniforme is singular, so azul stays singular
• zapatos is plural masculine, so negros is plural masculine

So:

• uniforme azul = blue uniform
• zapatos negros = black shoes

Notice that azul does not change in the singular masculine form. Its plural would be azules:

• uniforme azul
• uniformes azules

Not all masculine nouns end in -o, and not all feminine nouns end in -a. Uniforme is simply a masculine noun:

• el uniforme
• un uniforme

That is why, if you use an article, you would say:

• un uniforme azul
• not una uniforme azul

Many Spanish nouns ending in -e can be either masculine or feminine, so gender has to be learned with the noun.

In Spanish, descriptive adjectives usually come after the noun.

So:

• uniforme azul = blue uniform
• zapatos negros = black shoes

This is the normal order for color adjectives and many other basic descriptions.

English usually says:

• blue uniform
• black shoes

Spanish usually says:

• uniforme azul
• zapatos negros

Sometimes adjectives can come before the noun, but that usually changes the style, emphasis, or meaning. With colors, the normal place is after the noun.

It means to go to school or more literally in order to go to school.

Here, para introduces purpose:

• para = for / in order to
• ir = to go
• al colegio = to school / to the school

So the phrase explains why the person is wearing the uniform and black shoes:

• Hoy lleva uniforme azul y zapatos negros para ir al colegio.
• Today he/she is wearing a blue uniform and black shoes to go to school.

Because a + el contracts to al in Spanish.

So:

• a + el = al

That is why you say:

• ir al colegio
• voy al médico
• vamos al parque

The only common exception is when el is part of a proper name:

• Voy a El Escorial
• not Voy al Escorial if El is part of the name itself

Spanish and English use articles differently. In Spanish, after ir a, it is very normal to use the article with places like colegio:

• ir al colegio
• ir al trabajo
• ir a la universidad

Even when English drops the article, Spanish often keeps it.

So English:

• go to school

Spanish:

• ir al colegio

That is just the standard Spanish pattern here.

In Spain, colegio is a very common word for school, especially for younger students. So in a Spain Spanish context, ir al colegio sounds very natural.

Very roughly:

• colegio = school, especially primary or general school in Spain
• escuela can also mean school, but it is often used in broader or more specific ways, depending on context

A learner should know that in Spain, colegio is extremely common for everyday school-related talk.

Hoy means today, and putting it at the beginning sets the time frame right away.

So the sentence starts by telling you when this is true:

• Hoy = today

This is very natural in Spanish. You could also place it elsewhere, but the beginning is common and clear:

• Hoy lleva uniforme azul...
• Lleva hoy uniforme azul... (possible, but less neutral here)

Starting with Hoy gives the sentence a simple, natural flow.

You could, but llevar is more common when describing what someone has on.

Compare:

• llevar ropa = to wear clothes
• vestir = to dress, to clothe, or sometimes to wear in a more formal/descriptive style

So:

• Hoy lleva uniforme azul sounds very natural and everyday
• Hoy viste uniforme azul is understandable, but less common in ordinary speech for this kind of sentence

Also, vestirse means to get dressed:

• Se viste para ir al colegio = He/She gets dressed to go to school

That is a different idea from already wearing something.

They focus on different moments:

• lleva = is wearing / has on
• se pone = puts on

So:

• Hoy lleva uniforme azul = Today he/she is wearing a blue uniform
• Hoy se pone el uniforme azul = Today he/she puts on the blue uniform

In other words:

• llevar describes the result or current state
• ponerse describes the action of putting the clothes on

That is why lleva is the better choice here.