The didactic poems of Niketas of Herakleia chiefly concern grammar and are written in various metres, all of them accentual, even including hymnographic metres. Rather than being mere reformulations of existing grammatical knowledge, the poems urge us to consider questions related to contemporary teaching practices. How does verse help to transmit knowledge, and which roles do accentual rhythm and musical heirmos play in this process? Issues of performance, audience and patronage are of undeniable importance for this question. The poems reflect a lively (sometimes unruly) classroom situation and an equally lively competition between teachers in Constantinople. Especially Niketas’ remarks on schedography reflect this competitive teaching field. Thus, the poems of this versatile author may explain why grammar became in the twelfth century an object to be reflected upon, reformulated, debated and even aestheticized. The chapter also situates Niketas in the literary tradition of didactic poetry. How does he, as a poet, at the same time represent himself as an able teacher and expert? And how does he combine poetic form and avowedly dry subject matter?