Answer:

retest

Answer	Crossword Clue
RETEST	Second-grade offering?
RETEST	Second chance in education?
RETEST	Opportunity to go beyond the first grade?

RETEST	Check over
RETEST	Student's second chance
RETEST	Take back to the lab
RETEST	Double-check
RETEST	Lab verification
RETEST	Makeup
RETEST	Examine again