I would recommend you to read an article, which can be found HERE by Graham Gibbs and Claire Simpson which:
"... sets out and attempts to justify a set of ‘conditions under which assessment can support learning’. The evidence is rarely conclusive enough to argue that if your assessment fulfils these conditions then learning
will inevitably be more effective. They are offered as a plausible set of guidelines".
Can we make our students learn and underpin the acquired knowledge better with tools different from exams?...