Complex sentence: He was a maths teacher at Preston Lodge High School in Prestonpans until his appointment at St Mirren and has since left Paisley and is currently teaching the mathematics at Craigmount High School in Edinburgh.
Split into simpler sentences: He was a maths teacher at Preston Lodge High School in Prestonpans until his appointment at St Mirren. He has since left Paisley and is currently teaching mathematics at Craigmount High School in Edinburgh.