The Clue
Upper class: Abbr. (3 letter answer)
The Answer
SRS
Tags
Notes
The answer SRS is seen frequently, appearing about once every 60 puzzles.
Related Clues
A.A.R.P. members
A.C.T. takers
Elders: Abbr.
Frat vets
Future grads
Grads-to-be
G.R.E. takers
H.S. V.I.P.'s
Jrs.' elders
Jrs. of yesteryear
L.S.A.T. takers
Name suffixes
Promgoers: Abbr.
S.A.T. takers
Undergrad. bigwigs
Upperclassmen: Abbr.
Yearbook div.
Yearbook sect.
Class members: Abbr.
Future grads: Abbr.
Grads-to-be: Abbr.
Graduating class: Abbr.
Graduating students: Abbr.
High-school V.I.P.'s
Last year's jrs.
Some name suffixes
Soon-to-be alums.
Sophs., in two years
They're almost grads
Typical G.R.E. takers
Certain prom-goers: Abbr.
The class of '13 in '13, e.g.
High-grade group?: Abbr.
Some high-schoolers: Abbr.
Soon-to-be grads: Abbr.
Sophs., two years later
Class that's soon to leave: Abbr.
Definition
SR as a noun:
1. (strontium, Sr, atomic number 38) = a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite
2. (steradian, sr) = the unit of solid angle adopted under the Systeme International d'Unites