15 across
Mark
it
right
in
report
card
(6)
Mark it right in report card (6)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
The definition is card, since a ticket is a small card or document. The instruction to "Mark it" means to "tick it," which when said aloud ("in report") sounds like TICKET.