More success factors for a high-quality educational system

Written from an US-point of view, four more factors, influencing the quality of teaching: 

1. Support new teachers (In Norway new teachers are coached 20% of their time)

2. Time spend outside the classroom for mandate mentoring, preparing, meetings with parents etc.

3. Participation in decision-making, curricula as a broad framework

4. Lifelong learning and further qualification, with a clear incentive and stimulus to take courses.  

See also the report on "Professional Learning in the learning profession"