Enter a clue or pattern or both:
The Clue
Focus of a class action? (4 letter answer)
The Answer
TEST
Tags
Notes
The answer TEST is seen frequently, appearing about once every 60 puzzles.
Related Clues
Acid ___
Audition
Check
Criterion
Exam
Examination
Experiment
Probe
Prove
Quiz
Rorschach, for one
S.A.T., for one
Touchstone
Trial
Try
Tryout
Ultrasound is one
Acid or high
Check out
Course finale
Dick or Schick
Dry run
Invertebrate shell
Kind of tube
Midterm, e.g.
Pupil's ordeal
Put to trial
Student's hurdle
The "T" of S.A.T.
Try out
Use a cupel
Cause of a class struggle?
Entrance requirement, maybe
It's got problems
Kind of case or flight
Dip one's toe in, say
Putting a toe in the water, say