In the midst of what's being called a "challenging time," two of Kate and Jon Gosselin's children have been expelled, PEOPLE reports. Collin and Alexis, both 6, are being home schooled after being asked to leave a private school in Pennsylvania.

Though there've been reports of violence and bullying at the school, a source close to the situation claims the children were not behaving as badly as claimed.

"The situation is being grossly overstated," the source told PEOPLE. "The kids are going through a challenging time, but Kate doesn't feel this is something that should be discussed publicly. It is a private matter."

This isn't the first time one of the Gosselin kids was expelled-one of the sextuplet girls was previously suspended for hitting a classmate, the New York Post reports.

Kate has previously stated that her divorce from Jon has caused the children stress and that they've suffered some difficult moments. But overall, she said her kids (twins Cara and Mady and sextuplets Alexis, Hannah, Leah, Aaden, Collin and Joel) are handling the split ok.