Jillian Balow, Republican Virginia Gov. Glenn Youngkin’s superintendent of public instruction, announced her resignation Wednesday in a letter to the governor that did not offer a specific reason for her departure.

The Department of Education has faced criticism for recent missteps, including an error in a mathematical formula the agency provides to local K-12 school divisions that led schools to expect more state funding than they were set to receive.

“I am grateful and humbled to have had the opportunity to serve the children and families of Virginia and I continue to strongly support you and your vision for education in Virginia. I am particularly proud of the fact that we advanced your agenda for education over the past two successful General Assembly sessions,” Ms. Balow wrote in her letter, which the department shared in a news release.

Gov. Youngkin’s press office did not respond to a question from The Associated Press about whether the governor asked Ms. Balow to step down, instead offering a one-sentence statement.

“The Governor thanks Superintendent Balow for her service to the Commonwealth and her work in advancing the Governor’s education agenda to empower parents and restore excellence in education,” spokeswoman Macaulay Porter said.