"学校作息时间表" can be translated into English as "school schedule" or "school timetable".
"School schedule" is a more general term that can refer to the overall plan or arrangement of activities, including classes, breaks, extracurricular activities, etc., throughout the school day or week.
"School timetable" is more specific and typically refers to a detailed list or chart showing the times and durations of classes and other scheduled activities.
In the context of referring to a document or chart that outlines the daily or weekly routine of a school, both terms are commonly used and understood.