* An electricity cut-out box was placed so it protruded 40cm at a height where teachers could bash their heads.
* While bulldozing buildings as part of a school refurbishment, contractors demolished a small shed that was in their way. Unfortunately it was being used as a temporary chemical store. The school's chemical stock was destroyed and the clean-up job was huge.
* A carefully-planned refurbishment in a South Coast school went wrong when builders used larger sinks than planned - leaving six pupils without a seat in every lesson.
* Benches in one lab were fitted so close together that the cupboard doors beneath them could not be opened.