The office of the Domestic of the Schools (, domestikos tōn scholōn) was a senior military post of the Byzantine Empire, extant from the 8th century until at least the early 14th century. Originally simply the commander of the Scholai, the senior of the elite tagmata regiments, the Domestic quickly rose in prominence: by the mid-9th century, its holders essentially occupied the position of commander-in-chief of the Byzantine army, next to the Emperor. The office was eclipsed in the 12th century by that of the Grand Domestic, and in the Palaiologan period (13th–15th centuries), it was reduced to a purely honorary, mid-level court dignity.