Center for Engaged Teaching and Learning

In education, the term relevance typically refers to learning experiences that are either directly applicable to the personal aspirations, interests, or cultural experiences of students (personal relevance) or that are connected in some way to real-world issues, problems, and contexts (life relevance).

Source: https://www.edglossary.org/relevance/

The term rigor is widely used by educators to describe instruction, schoolwork, learning experiences, and educational expectations that are academically, intellectually, and personally challenging. 

A rubric is typically an evaluation tool or set of guidelines used to promote the consistent application of learning expectations, SLOs in the classroom, or to measure their attainment against a consistent set of criteria. These provide a useful tool to use in formative assessments.