Breakdown of U učionici uvijek ima netko tko želi postaviti pitanje.
Questions & Answers about U učionici uvijek ima netko tko želi postaviti pitanje.
Starting with U učionici puts the focus on where this happens. It sets the scene:
- U učionici uvijek ima netko… = In the classroom there is always someone…
You could say Netko u učionici uvijek želi postaviti pitanje, but then the focus shifts slightly more to someone as the topic, rather than the general situation in the classroom. The original order sounds more natural as a general observation.