Papers released in December 2014 show that Thatcher completely disapproved of GCSEs which, in 1986, Sir Keith Joseph was trying to introduce in the face of fierce opposition from teaching unions. At very least she wanted a two-year delay to ensure rigorous syllabuses and adequate teacher training. However, when the unions who had been involved in a pay dispute for two years further criticised reforms at their conference, Joseph persuaded her to go ahead immediately to avoid appearing to take their side. According to Dominic Cummings, special advisor to Michael Gove, it was a catastrophic decision which led to a collapse in the integrity of the exam system.
