Even the masters droned through the perfunctory exercises, flunking the boys by twos and threes, by groups, by long rows, but without malice or emotion.
Faking is mighty poor business Ted, whether it's trying to establish an alibi for flunking your school exams, or making army shoes with paper soles for the government.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "flunking" in a variety of sentences. We hope that you will now be able to make sentences using this word.