Considering the number of the magazine is about "evaluation and use of data", which recommendations will you give to teachers regarding this topic?

"Evaluation is asking about the merit, worth and significance of implementation – what have I taught well, who have I taught well, and what magnitude is the impact of what I have taught.  Evaluation involves making value judgments about the adequacy of my impact on all my students.  My advice is for teachers to work together to evaluate their claims about impact – yes, they talk a lot about resources, students but the request is to critique lessons for the increasing complexity of cognitive demands, the enjoyment of the challenges in the lesson, and the impact based on the artifacts from these lessons – hence the power of collective evaluative impact.  This requires school leaders to create the time and space for this to happen, to build the trust, to provide the resources to evaluate the impact, and to provide the professional learning opportunities to capacity build these evaluative thinking skills.  (And if there is a whiff of accountability then the trust vaporizes)” (John Hattie, personal communication, August 19, 2018).