Scottish educational policy advocates the benefits of collaborative learning as a way of developing critical life skills, across the primary curriculum. In this paper, the rationale for collaborative learning, and specifically the Critical Skills (CS) approach, is considered along with an account of the perspectives of primary teachers implementing the methodology in their classroom. Based on the results of semi-structured interviews and an electronic survey, this article considers teachers' opinion on the effectiveness of the CS approach, and highlights challenges relating to attaining, effectively retaining and analysing the evidence of impact gained via collaborative learning. It concludes that the latest technologies, including multi-touch technology, present scope to ease the challenge of assessing the collaborative process.