Roseanne Sweetman also left four primary seven pupils unsupervised at Mosstodloch Primary School in Moray, on November 14, 2012.
The teacher left early on the same day without permission and made disparaging comments about a pupil's work and hair colour on another occasion.
Ms Sweetman was barred from the classroom by the General Teaching Council for Scotland (GTCS) yesterday, after she admitted a string of misconduct charges and agreed to be removed from the register of teachers. She admitted shouting at a "visiting music specialist" and an "education auxiliary" in front of a number of pupils.
"This caused some of the pupils who were present to become distressed and to feel frightened," the GTCS charges said. She left four pupils unsupervised for around 35 minutes "by sending them back to a classroom where no teacher was present". She further admitted discussing topics with the P7 class which were "inappropriate".
One lesson showed "a piece of art depicting a lady naked from the waist up, which was not appropriate for the primary seven class".
In a statement read out to the GTCS panel, Ms Sweetman said: "I freely and willingly consent to being removed from the register in view of my admission of the allegation."