This article speaks to how formative assessments, portfolios, and a holistic view of the child can be incredible effective, motivating tools for teachers and students. Take a look!
http://blogs.edweek.org/edweek/learning_deeply/2014/10/to_improve_assessment_invest_in_the_classroom.html
http://blogs.edweek.org/edweek/learning_deeply/2014/10/to_improve_assessment_invest_in_the_classroom.html