“When you say something is par for the course, what you mean is that it is usual and acceptable for the given situation.” “In other words, your experience tells you that what is happening is normal.”
The expression comes from the world of golf.
“The government is planning to increase its budget for education. That’s par for the course.”
“Manaswini threw up several times during the long drive.” “Given the fact, she gets sick whenever she travels, I guess it’s par for the course.”
Source: “The Hindu” – Know Your English Column – Jan 01, 2008