School teaching is the work done by teachers in a school. ( FORMAL )
He returned to school teaching.
= teaching
N-UNCOUNT
School teaching is the work done by teachers in a school. ( FORMAL )
He returned to school teaching.
= teaching
N-UNCOUNT
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006