Answer:

RETEST

Answer	Crossword Clue
RETEST	Take back to the lab
RETEST	Subject to a new quiz
RETEST	Quiz over again

RETEST	Pupil's second chance
RETEST	Double-check
RETEST	Student's second chance
RETEST	Exam compared to a prior one
RETEST	Double-check, as in a lab
RETEST	Lab verification
RETEST	Makeup of a sort
RETEST	Verify prior results, perhaps

RETEST	Second chance in school
RETEST	Double-check, in a way
RETEST	Do lab work over again
RETEST	Give an exam again
RETEST	Give a second shot
RETEST	Try it again
RETEST	Make doubly certain
RETEST	Measure again

RETEST	Check again
RETEST	Assess again
RETEST	Makeup
RETEST	Makeup exam
RETEST	Give a makeup to
RETEST	Scholastic do-over
RETEST	Run through a new battery
RETEST	Try again

RETEST	Check over
RETEST	Assay again.
RETEST	Experiment anew.
RETEST	Make a new experiment.
RETEST	Try again.
RETEST	Try the "mike" again.
RETEST	Check again.
RETEST	Analyze again.

RETEST	Try out again.
RETEST	Do a chemist's job.
RETEST	Laboratory routine.
RETEST	Double check.
RETEST	Additional trial