We use a system called iMOE, It’s a school wide system that has an IT Request module.
The other modules are Room Booking (booking IT rooms), School Action Plan (sets out the schools plans and who is responsible for the nest few years), Facilities Request (rubbish clearing, bulb gone), Lesson Observations (inline observation for ofsted), Document Archive (speaks for it's self) and Student Administration (Staff, Student and room timetables, registers, reports, subs.....).
The teacher can raise a request and get full tracking via the web interface, they can even unlock and reset a student password!