HS or SH Excellence Lapel Hat Pin – Logo?

This circular pin features a stylized H with an S incorporated into the lower portion of the letter, positioned above the word Excellence. The design is surrounded by a laurel wreath and finished in a gray tone, giving it a formal, emblem-style appearance.

I’m unsure what the HS or SH logo represents. Pin measures approximately 1 inch in diameter.

Condition: Used with minor marks. Please review all photos for exact condition of item and size.