8 Young and old alike, teacher as well as student, cast lots for their duties.

Read 1 Chronicles 25:8 Using Other Translations

And they cast lots, ward against ward, as well the small as the great, the teacher as the scholar.
And they cast lots for their duties, small and great, teacher and pupil alike.
The musicians were appointed to their term of service by means of sacred lots, without regard to whether they were young or old, teacher or student.