Complex sentence: But regardless of Proba's intent, there is evidence that the poem was widely circulated, and it eventually was used in schools to teach the tenets of Christianity, alongside Augustine of Hippo's "De Doctrina Christiana".
Split into simpler sentences: But regardless of Proba's intent, there is evidence that the poem was widely circulated. Eventually, it was used in schools to teach the tenets of Christianity, alongside Augustine of Hippo's "De Doctrina Christiana".