Let's break it down:
* "Como se llama" means "What is called" or "What is the name of"
* "el directo" means "the principal" (male)
* "la directora" means "the principal" (female)
* "de escuela" means "of school"
The phrase is flexible and can be used to ask about the principal of any school, whether it's a primary school, secondary school, or university.