Strong's G2567 — καλοδιδάσκαλος (adjective)
kalodidaskalos (kal-od-id-as'-kal-os) adj.
1. a teacher of the right
[from G2570 and G1320]
KJV: teacher of good things 
Root(s): G2570, G1320 
Hebrew root: διδάσκαλος
Occurrences: 1