Razrednica je moj izostanak već upisala u dnevnik.

The homeroom teacher has already entered my absence in the register.

Breakdown of Razrednica je moj izostanak već upisala u dnevnik.

• biti: to be
• u: in
• moj: my
• već: already

Questions & Answers about Razrednica je moj izostanak već upisala u dnevnik.

What exactly does razrednica mean?

Razrednica is a female homeroom teacher or class teacher — the teacher responsible for a particular class group.

It is specifically the feminine form.
The masculine form is razrednik.

So:

• razrednica = female class teacher
• razrednik = male class teacher

Why is the verb form upisala feminine?

Because it agrees with the subject razrednica, which is feminine singular.

In Croatian perfect tense, the past participle changes form to match the subject:

• upisao = masculine singular
• upisala = feminine singular
• upisalo = neuter singular

So:

• Razrednik je upisao... = if the teacher is male
• Razrednica je upisala... = if the teacher is female

Why do we need je here?