The phrase "abandoned teaching" is correct and usable in written English.
It can be used to describe a situation where someone has stopped or given up on teaching, either temporarily or permanently.
Example: "After years of dedication, she felt that her passion for education had faded, leading to her abandoned teaching career."
Alternatives: "discontinued teaching" or "forsaken teaching".
She eventually abandoned teaching and left Boston.
Richard Goldberg, a math Ph.D., had just abandoned teaching after a semester at Dartmouth College.
He studied in Switzerland and worked as a university economics teacher, but abandoned teaching to help his father design the bathyscaphe.
Some schools had abandoned teaching the subject altogether, or squeezed it into lessons on personal, social and health education; and one in four had reduced resources for the subject.
In 1931 he abandoned teaching in favour of the party apparatus.
I'd recently abandoned teaching to go back to school full-time, which meant foolishly taking out several dozen thousand dollars in student loans to heap upon the $60,000 debt from my undergraduate education, bringing the sum total to a bloated figure in the six digits.
Two years later, determined to return to London and abandon teaching, she established herself at the National Portrait Gallery as research assistant.
In her post-college years, DiDonato had wondered whether she was wrong to abandon teaching in favor of a seemingly more frivolous pursuit.
I had to abandon teaching Latin and Greek in secondary schools because of severe deafness, and applied to join Oxford's schools examination board.
The Great Man: Sir Robert Walpole - Scoundrel, Genius and Britain's First Prime Minister by Edward Pearce 496pp, Jonathan Cape, £25 Is it just coincidence that, as schools and universities abandon teaching the 18th century, the period only grows in popular interest?
He tried showing slides of Michelangelo's work at "several sticky evening sessions" before abandoning teaching and saying: "Why don't you have a go?" The results were so sensational that the Ashington Group was lionised by London critics, offered visits to the National Gallery and the Royal Academy, and featured in a series of 1930s and 40s documentaries.
