Informamos a la directora.

Informamos can mean either we inform (present) or we informed (preterite/simple past). In this verb form, the nosotros present and preterite look the same for regular -ar verbs.

Context tells you which one it is:

• Hoy informamos a la directora = Today we inform / are informing the director
• Ayer informamos a la directora = Yesterday we informed the director

Spanish often leaves out subject pronouns because the verb ending already shows who the subject is.

Here, -amos tells you it is we.

So:

• Informamos a la directora = normal, natural Spanish
• Nosotros informamos a la directora = also correct, but usually used for emphasis, contrast, or clarity

For example:

• Nosotros informamos a la directora, no ellos = We informed the director, not them

This is the personal a. Spanish uses a before a specific person who is the object of the verb.

So:

• Informamos a la directora = the object is a person
• Informamos el cambio = the object is a thing, so no personal a

This a is not usually translated into English.

Spanish often uses the definite article with job titles or roles when talking about a person.

So a la directora is the normal way to say the director / headmistress in this kind of sentence.

Compare:

• Informamos a la directora = talking about her
• Directora, ¿tiene un momento? = directly addressing her, so no article

Also compare:

• Es directora = She is a director
• Es la directora del colegio = She is the director of the school

Yes. Directora is the feminine form of director.

If the person were male, you would say:

• Informamos al director

Notice the contraction:

• a + el = al

But there is no contraction with la:

• a la directora stays a la directora

Not exactly.

Informar is more formal and often sounds official, professional, or administrative. It is closer to to inform, to notify, or sometimes to brief.

Decir is more general and everyday: to say / to tell.

So:

• Informamos a la directora sounds formal or official
• Le dijimos a la directora sounds more everyday: We told the director

Both can be correct, but they do not always have the same tone.

A learner will often expect la, and that is a good standard choice:

• La informamos

That is because the person being informed is commonly treated as the direct object in this structure.

However, in Spain you may also hear le in real usage, especially in formal language or in areas where leísmo is common:

• Le informamos

So for learning purposes:

• La informamos = a safe, standard grammatical choice
• Le informamos = also something you may hear in Spain

A very common pattern is:

• informar a alguien de algo
• informar a alguien sobre algo

Examples:

• Informamos a la directora del problema = We informed the director about the problem
• Informamos a la directora sobre los cambios = We informed the director about the changes
• La informamos de que llegaríamos tarde = We informed her that we would arrive late

Notice this contraction too:

• de + el = del

So de el problema becomes del problema.