To raise the bar is to set a higher standard than before. That performance raised the bar.
The picture is from the high jump, where the bar goes up after each round. It can be a compliment to somebody else's work or a threat about next year's targets.
1phraseraise the barTo set a higher standard than before.
“The first series did raise the bar for everything after it.”
raise the bar is a phrase.
Practised in Idioms