This paper investigates the process of assessment for learning (AfL) in the primary school Irish language classroom. Electronic portfolios (e-portfolios) are used as a tool in assessment for learning with eight of my second class pupils in an urban primary school in North Dublin. This research was carried out as part of the Master of Science in Education and Training Management (e-learning strand) at Dublin City University and was supervised by Dr. Margaret Farren. Some strategies from the literature served as a solid basis from which to develop a framework to organise my own investigation. My action research enquiry is strengthened by the values I hold for my pupils and for my own professional practice, which include the value of self-evaluation, freedom to create in language-learning using technology and the ability to ‘share learning’ with a peer. Several strategies emerge through the enquiry, which improve with reflection, planning and redrafting. My introduction to the practicalities of implementing electronic portfolios involve identifying appropriate software, dealing with technical difficulties and adapting the portfolios to meet the needs of my pupils. Through the process of critical questioning and action reflection cycles my own professional practice has developed. By seeking to create a living educational theory, I hope these changes have impacted positively on my pupils’ learning and involved me in deeper reflection of my own teaching.