Positive
consistent

Comparative
more consistent

Superlative
most consistent

Consistent is on the Academic Vocabulary List.

If something is consistent, it is regular and you can guess what it will be like in the future.
She makes a consistent effort to study hard.

My Math scores at my school show a consistent 80 to 95 percent.

My math scores are mostly consistent because I have had the same grades since grade 9.
If X is consistent with Y, then X fits or matches Y.
The theory is consistent with the data.

His behavior is consistent with his words.
always behaving or happening in a similar, especially positive, way
My Math scores are consistent because I always get an A on quizzes and exams.

Adjective