Flipping the system means moving away from a standardised curriculum for all pupils on the one hand, and a free-for-all of individual choice and personalisation that has no reference to core values and commitments on the other. Technology experts and advocates have offered pupils more personalization of curriculum choices, in part by providing independent access to information and resources irrespective of the teacher. The Scottish Curriculum for Excellence values not only traditional academic excellence but also the importance of children becoming confident learners and effective contributors. The English system actually awarded higher salaries and bonuses to the school leaders who achieved temporary, but ultimately evanescent short-term results, compared to the leaders who built more sustainable improvements over time. Most "super-heads" stayed for only a year or two when they focused their changes on the school year and subjects used to assess performance, so they could make quick improvements, take the credit, and move on.