English for Today by Ganiu Abisoye Bamgbose (Dr GAB)
School and Grammar
I’m not sure the school management will ~shift~ the exam (nonstandard).
I’m not sure the school authority will postpone the examination (standard).
She can consider any of the ~extra moral~ classes (nonstandard).
She can consider any of the extramural classes (standard). An extramural programme is a course of study arranged for people who are not full-time members of a university or other educational establishments.
The school uses ~machineries~ for its external examinations (nonstandard).
The school uses mercenary students for its external examinations (standard). A person is said to be mercenary when they are primarily concerned with making money at the expense of ethics.
GAB