What's an adjective that means "has high expectations"

Solution 1:

I like saying simply, "I have high standards for myself and teammates."

Solution 2:

Consider punctilious

very careful about behaving properly and doing things in a correct and accurate way

Also consider

  • meticulous
  • scrupulous
  • painstaking
  • conscientious

Solution 3:

It sounds like you're meticulous.

Meticulous: very careful about doing something in an extremely accurate and exact way

Solution 4:

Consider particular.

He is very particular about his grades and working hard.