The phrase "can't make the grade" refers to an individual's inability to perform to the required level or standard. Antonyms for this phrase would include "successful", "accomplished", "competent", "proficient", and "capable", among others. These words describe individuals who are skilled or able to meet the expectations or requirements demanded of them. Additionally, antonyms for "can't make the grade" could include phrases like "exceeding expectations" or "going above and beyond", which capture the idea of exceeding the minimum requirements. Overall, antonyms for this phrase describe individuals who are capable of meeting or surpassing the expectations set before them.