Question

If you are talking about a laboratory at school, which word would you use

Answer 1

If we talking about a laboratory at school, we may have some options;
Science lab: laboratorio de ciencias.
Computer lab: laboratorio de computación
Speech lab: laboratorio de fonética o pronunciación.

it is important to know that not all the schools have all the labs, it might change according to the school or the needs of that comunity.

Answer 2

For this case in the universities there are different laboratories for teaching.

For example, for area like physics, computation we have:

For physics we have:

Laboratorio de Fisica. Here are mass-spring systems, pendulums, electric circuits among others.

For computation we have:

Laboratorio de computación. Here are different computers with different software for learning and using computer tools.

For manufacturing processes we have:

Laboratorio de Procesos. Here are different machines for use in the manufacture of parts, such as lathes, CNC machines, grinding machines, among others.

Note: Laboratory = Laboratorio