"Study at quack" essentially refers to the act of studying or attending a less reputable or substandard educational institution. Synonyms for this phrase include "pursue education at a low-quality institution," "enroll in a dubious institution," "attend a mediocre academy," or "study at an inferior college". Students may end up studying at a quack due to numerous reasons such as lack of funds, low grades, or lacking accepted requirements for more reputable colleges. It's essential to research the quality of an educational institution before investing a lot of time and money. Doing so will ensure that students get the best education possible and help set them up for a successful future.