γραμματοδιδάσκαλος
From LSJ
ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
English (LSJ)
ὁ,
A schoolmaster, SIG578.8 (Teos), Telesp.50 H., Phld. Acad.Ind.p.24 M., Plu.Alc.7, Porph.Plot.3,BGU1214.4; cf. γραμμοδιδασκαλίδης.