Liberal Finance Minister Bill Morneau took to Twitter to criticize Andrew Scheer’s former policy of giving tax credits to families that send their kids to public school.

The policy was dropped by the Conservative Party in August.

According to a 2015 post by Toronto private school Greenwood College, Morneau formerly sat on the school’s Board of Directors and his son graduated from the school in the same year.

The financial section of the school’s website claims that annual tuition for the year 2019-2020 is $36,500, with an “initial enrollment fee” of $8,000.

Several other Liberal MPs including Chrystia Freeland and Julie Dabrusin were listed as current or former “Greenwood Parents on Parliament Hill.”