On 14 March 2012, the Trial Chamber I of the International Criminal Court (ICC) delivered its first judgment in the first completed trial in the case against Thomas Lubanga Dyilo. Lubanga was found guilty as a co-perpetrator in the conscription and enlistment of children under the age of fifteen years and of using them to participate actively in hostilities. This article comments on the significance of the ICC judgment in the Lubanga case. It argues that the judgment contributes to the development and improvement of the normative value of international criminal law. It is also argued that the Lubanga judgment may offer interesting insights on the socio-pedagogical role of international criminal justice. Indeed, it is observed that it contributes to strengthening the sense of accountability for recruiting and using child soldiers, by stigmatising such acts as contrary to the fundamental values of the international community.