Gavin Williamson wants exams to be voluntary and let teachers decide grades Teachers can rely on previous essays, coursework, mocks or any other classwork Experts warn of widespread grade inflation that is worse than 2020's debacle Ex-headteacher Chris McGovern accused ministers of 'surrendering' to unions He said qualifications are now 'in danger being downgraded to junk status' Teachers admit that grades will 'inevitably' go up now exams are being axed