When schools experience a staffing shortage or a rapid increase in population, they rely on education travelers to fill the gaps until permanent staff can be hired.
Travel contracts are typically the length of a school year, about 9 months, but are sometimes the length of one semester, about 5 months.
Employers may offer contracts for longer or shorter periods of time; it relies entirely upon the needs and preferences of the individual employers. The requirements to start work as a traveler are no different than the requirements for staff position – you just might have to pack a bag!