Crossword puzzle clue "back to school event"

___ rally (event before a high school sporting event)

Back-to-school event

"Push 'em back! Push 'em back! Way back!"?

Instrument often used in a flashback...back...back...back... *camera pans up everything goes blurry

Back-to-back-to-back championships

Proctored event, or proctologist's event

Go from event to event

Event before the main event