performed well in GCE O Levels to articulate their studies to A Levels. During the 1950s and early 1960s, grammar schools would commonly not accept entry by secondary modern students who had done well in O Levels and who wished to study for A Levels. Such students had to leave the school system and enrol at post-secondary institutions (generally for part-time, evening study). Accordingly, once a student had been streamed into a secondary modern school, irrespective of the student's level of success in GCE O Levels, the student faced enormous challenges in attempting to progress to GCE A Levels and beyond to university. There is limited information available as to why the Tripartite System showed inflexibility in this respect. There is also limited information as to how many secondary modern students, who performed well in GCE O Levels, were subsequently frustrated in attempting to progress to A Levels and beyond. One writer on the experience of being an academically able pupil in a secondary modern school, Michael Paraskos, claimed 'You knew you were a failure from day one. Because they told you! So they weren't pleasant places to be if you were into art, or books, or anything like that'. Paraskos also claimed in The Guardian that those who attend secondary modern schools 'are condemned to a lifetime of social exclusion and crippling self-doubt.' According to Anthony Sampson, in his book Anatomy of Britain (1965), there were structural problems within the testing process that underpinned the eleven plus which meant it tended to result in secondary modern schools being overwhelmingly dominated by the children of poor and working-class parents, while grammar schools were dominated by the children of wealthier middle-class parents. In the 1960s there was increasing criticism of the limitations imposed on students within secondary modern schools flowing from political pressure from increasing numbers of middle-class parents of 'baby boomer' children who did not obtain admission to grammar schools. and evidence that students from secondary modern schools who took GCE O Levels were increasingly achieving results comparable to those being achieved by students from grammar schools (a remarkable finding given the disadvantages, discussed above, of secondary modern schools compared to grammar schools) Movement towards a comprehensive system Further, the failure of secondary modern schools generally to equip the ‘submerged three quarters’ of British schoolchildren to realise their full potential led to calls for reform. Experiments with comprehensive schools began