[mick]

Originally Posted by Nevadaref

Counting out loud is not proper.
NFHS
2-7-9 . . . Silently and visibly counting seconds to administer the throw-in (7-6), free-throw (8-4; 9-1-3), backcourt (9-8) and closely-guarded (9-10) rules.

NCAA
Rule 2, Section 9

Art. 9.

(Men) Silently and visibly count seconds to administer throw-in,

free-throw, back-court, and closely guarded rules and silently count for
enforcement of the three-second rule.

Art. 10.

(Women) Silently count seconds to administer the free-throw and

three-seconds rules and visibly count seconds to administer the throw-in and
closely guarded (when holding the ball) rules.

Thanks, Nevada.
Yet, I am left to wonder whether any clinicians/assignors/supervisors recommend the practice.