In US education terminology, rubric is "a scoring guide used to evaluate the quality of students' constructed responses". Put simply, it is a set of criteria for grading assignments.

What rubric means?

A rubric is typically an evaluation tool or set of guidelines used to promote the consistent application of learning expectations, learning objectives, or learning standards in the classroom, or to measure their attainment against a consistent set of criteria.

What is the meaning of rubric in education?

A rubric is an assessment tool that clearly indicates achievement criteria across all the components of any kind of student work, from written to oral to visual. It can be used for marking assignments, class participation, or overall grades.