* Performance during the test: If you felt unprepared, struggled with many questions, blanked on significant portions, or ran out of time before finishing, you'll likely suspect a low grade.
* Gut feeling: Sometimes, even without clear reasons, you might just have a sense that you didn't do well. This is less reliable than objective indicators but can be a warning sign.
* Comparison with others (unreliable): Talking to classmates about the test can be misleading. People often overestimate or underestimate their performance, and comparing yourself only creates anxiety and isn't a reliable indicator.
Ultimately, the only way to know your grade is to see the graded test. Focusing on preparation for future assessments is more productive than worrying about a past one before you've received feedback.