Two high-ranking administrators within San Antonio Independent School District have resigned following the district’s decision to cancel class this week over heating and plumbing issues at its campuses. In an internal memo sent to staff Thursday and obtained by the Current, SAISD Superintendent Jaime Aquino said he accepted the resignations of Deputy Superintendent of Operations Ken Thompson and Chief of Operations Mike Eaton. Senior Executive Director of Child Nutrition Services Jenny Arredondo will take charge of the district’s Operations Division in the interim, according to the document.