Teacher shortages: ‘I had principals begging me to work’
Tom Mullins is one of many retired teachers covering short-term absences in schools
Tom Mullins: ‘It’s a different world to what I was used to . . . every classroom has an interactive whiteboard. Young teachers are downloading stuff from the internet.’ Photograph: Brenda Fitzsimons
Tom Mullins, a retired school principal, had been out of the classroom for 17 years when he thought about a return to teaching last year.