Former MSNBC host Keith Olbermann spent Mother's Day attacking mother of five Bethany Mandel for choosing to homeschool her children.

"Imagine putting ‘homeschool mom’ in your bio and not understanding you've just ruined the lives of five innocent children," the left-wing former host tweeted Sunday in response to a tweet by Mandel criticizing Lincoln Project co-founder Steve Schmidt.

Olbermann tweet

Former MSNBC host Keith Olbermann spent his Mother's Day criticizing mom of five Bethany Mandel for choosing to homeschool her children. (Screenshot/Twitter) (Screenshot/Twitter)

OLBERMANN, OTHER LIBERALS OFFER DISNEY ‘SIMPLE SOLUTION’: ‘MOVE’ MULTI-BILLION DOLLAR OPERATION FROM FLORIDA

Mandel, a conservative writer and editor for the children's book series Heroes of Liberty, had responded to attacks from Schmidt on the late-Arizona Sen. John McCain, his daughter Meghan McCain and former Alaska Gov. Sarah Palin, by calling him a "narcissistic lunatic" for bragging about "intimidating" the elder McCain in an encounter prior to his death.

"What an empty life this man lives. This is how we live ours," Mandel later responded to Olbermann, mocking his criticism, and including photos of her family spending time together outdoors.

"I love that my two year old (green hoody) is jump walking, her feet off the ground in this shot. That’s how she lives her life," she added.

Bethany Mandel

Bethany Mandel mocked Former MSNBC host Keith Olbermann after he criticized her for homeschooling her children. (Screenshot/Twitter)

CHILDREN'S BOOK ABOUT RUSH LIMBAUGH AIMS TO TEACH KIDS IMPORTANCE OF FIRST AMENDMENT

Mandel continued mocking Olbermann in a separate tweet, referencing a school trip she took her kids on to the National Gallery, saying, "My poor homeschool kids," and including a laughing emoji.

When asked for additional comment on Olbermann's remarks, Mandel pointed to what she called the "severe academic disadvantage" her children would be in if they attended public school in their home county in Maryland.

"If my kids went to public school where I live, they would be at a severe academic disadvantage. They would have spent over a year on Zoom and then tried to learn how to read with their and their teacher’s mouths covered as they learned letter sounds," she told Fox News Digital.

Keith Olbermann

Keith Olbermann (Paul Drinkwater/NBC NewsWire) (Paul Drinkwater/NBC NewsWire)

CLICK HERE TO GET THE FOX NEWS APP

"Instead, they go to museums and have 1:1 instruction with the most caring and loving teacher possible: their mom. My kids are extraordinarily lucky to be homeschooled," she added.

Mandel provided a chart showing declining math proficiency scores for Montgomery County middle schools, which, according to the chart, reached a low point in 2021, a year following the onset of the coronavirus pandemic.