Teachers in modern-day America face a whole host of problems. Under-funded schools, low pay, union busting, an overemphasis on standardized testing, and children who are addicted to technology.

But it seems the biggest problem for many teachers is dealing with parents.

"Today, new teachers remain in our profession an average of just 4.5 years, and many of them list 'issues with parents' as one of their reasons for throwing in the towel," Ron Clark, motivation speaker and author of five,books on education, said in a CNN editorial.

"Word is spreading, and the more negativity teachers receive from parents, the harder it becomes to recruit the best and the brightest out of colleges," Clark continued.

Jessica Gentry, a former kindergarten teacher for 12 years at at Stone Spring Elementary School in Harrisonburg, Virginia, wrote a viral Facebook thread about why she's left the profession and says that parents were a major reason.

"I think it's easier for people to believe that I left teaching because of the lousy pay," she wrote in a post last June that received over 270,000 reactions and 220,000 shares.

RELATED: Science proves 'kids these days' are fine—it's the adults who tend to be oblivious a-holes

"It was easier for my former HR director to believe it was because I found something that I was more passionate about. Some would allow them to assume that... let them be comfortable in their assumptions because your truth may lead to discomfort of others," she continued.