Mathematics anxiety affects students across all abilities and levels. Why is math anxiety related to poor math performance and how can we reduce this linkage? Teachers must learn how to effectively alleviate these problems using the most current research and best practices. This paper focuses on the causes for mathematical anxiety and explores the ways it can be handled at school level. Current behavioural and psycho-physiological research reveals that the math anxiety math performance link is related to both individual (cognitive, affective/physiological, motivational) and environmental (social and contextual) factors. Several interventions have recently been developed to alleviate the relation between math anxiety and math performance. To lower math anxiety and reduce its relation to poor math performance, future interventions may benefit from focusing on both math-anxious individuals themselves and those around them.