How do you say "full-time student" in Spanish?

How do you say "full-time student" in Spanish?
 

Thanks in advance.

The typical expressions for "full-time" are:

a/de jornada completa
a/de tiempo completo

Based on the dictionaries I've checked so far, typically one uses the preposition "a" when using the expression as an adverb and one uses the preposition "de" when using the expression as an adjective. Therefore:

a full-time student = "un/una estudiante de jornada completa" or "un/una estudiante de tiempo completo".

For comparison, "part-time" is:
de medio tiempo (adj or adv)
a tiempo parcial (adj or adv)

Some of the dictionaries I've checked say that "de medio tiempo" is used in Latin America and that "a tiempo parcial" is used in Spain.

Yes, we use "a" in all the examples you wrote.

Muchas gracias! :)

A full-time student woul be oficial tambien