Adrienne Park, from West Dunbartonshire, agreed to be banned from the classroom after a string of blunders which include leaving a knife cupboard unlocked.
The domestic science teacher mixed up students' results, meaning that some pupils who had passed their course were registered as a fail with the SQA.
She was one of three teachers who agreed to be struck off yesterday by the General Teaching Council for Scotland in Edinburgh.
George Stewart Murdoch, from Edinburgh, agreed to a ban from the classroom after he was convicted of a breach of the peace in 2011.
Kathleen Rogerson from Midlothian agreed to be struck off after she submitted exam work to the SQA knowing it had not been done by her pupils.