Standards in education have changed significantly over time. Early GCSE exams from 1958 focused on simple explanations, while 2009 questions expected students to apply knowledge to new evidence and explain how it relates to theories like evolution. A-level pass rates have also increased steadily over the past 15 years. Additionally, the number of grade changes resulting from enquiries has gone up in recent years, indicating standards are dynamic and experts continually re-evaluate them. Overall, the document argues that educational standards are complex, involving experts who actively discuss and refine expectations over time based on new evidence.