Translation:I am looking for writers in front of the school.
Does this mean that I am in front of the school while looking for writers, or I am looking for writers, who would be in front of the school. The first being I can look for writers elsewhere as well. The second being the writers should be in front of the school, and I am looking for a particular group of writers.
what you suggest with the "before"-that we would say normally like this- "a tanítás(teaching) előtt keresek írókat" the only way we would say "az iskola előtt..." -talking about time-is the following situation.you are on holiday,and before the teaching starts,you want to look for writers.then we can (and do )say "az iskola előtt..." so,actually you are right,but when we use "az iskola előtt..." place comes first into our mind,not time.