I don't know what he's thinking build a mountain of rubble behind the school. Is it a non-metaphorical mountain you want them to climb? Was the metaphorical one not working? Are you building it for both schools? They both have this mountain climbing metaphor engrained in their roots. If you are we don't want to share the mountain with you.
So this needs an explanation My school and another school are on the same road. The former vice principal of my school (DTA) left 1.5 years after DTA opened to create another school (DMA) 2 years ago. The building DMA originally had was too big so they were demolishing part of it which now is a mountain of rubble. Which I found funny because both schools use the metaphor of climbing a mountain to University (which makes their goal for every student to go to uni). Not a very interesting story.