Ever since the Frankfurt International people built my school a classroom for Grade R last year, we had enough rooms for each teacher. At the beginning of this year, grades 7 and 8 were combined due to numbers and so one classroom stood empty. Now you can see the concrete pad the department has finished for another unnecessary classroom, this time mobile. God knows why they're still going ahead with it.
On a side note, you can also see the generally lower quality of construction that prevails here, especially when it comes to concrete. This slab was mixed on site and finished over a week or so, so there are several cold joints across the whole thing. There is no steel reinforcement, and you can notice the puddles from no thought to drainage.