An idea that started in a 3rd-grade classroom in Denver has taken off on social media.

A teacher in the public school system was trying to find a way to better understand her students and ended up creating a moving Twitter campaign that has impacted countless individuals, according to a KUSA report.

Kyle Schwartz, who teaches at Doull Elementary in Denver, was trying to reach out to her mostly Hispanic students, who were mostly receiving either free or reduced lunches through the school system.

She asked her students to finish the question, “I wish my teacher knew…”

Schwartz said her students “told me exactly what they thought I should know,” and that when you give them a voice, “they’re really more open.”

Since then, her small idea has blown up, with both funny responses and brutally honest ones.

#IWishMyTeacherKnew is now trending on both Twitter and Facebook as the idea has taken off.

Many of the kids in her school live in poverty, and they shared heartbreaking realities with her, like the fact that they don’t have pencils at home, or — like one student wrote — sometimes a reading log isn’t signed because a parents isn’t always around.

Schwartz said 70 percent of kids in Denver live in poverty, something she says is “unacceptable.”

Schwartz said she had gotten a note from a social worker who had been touched by the effort, and shared with her that she has kids she’ll have to put in foster care, and she’s going to have them write “I wish my foster parent knew.”

Schwartz said a major reason for the lessons was to build a community within the classroom. After one student shared that she had no one to play with at recess, for example, the rest of the class jumped in and the next recess she was playing with a group of girls.