SUPPLY AGENCY, TimePlan’s latest publicity wheeze is to corner the market in tall teachers with long names - well, just the one. Jo Zwierzchaczewski (pronounced “swizzerchesski”, she says) is six-foot three,and became the company’s 100,000th placement this week. A typically unflappable Aussie, Jo seems to have no worries about qualifying for the record books. Her friends apparently call her Jo Z. But what will her pupils call her?