Qualitative evaluation mainly uses language to evaluate, focusing on the characteristics of personal performance, skills, knowledge and attitude. This evaluation method often depends on the subjective judgment of the evaluator, for example, the teacher's evaluation of students' oral expression ability, reading comprehension ability and writing ability.

Quantitative evaluation is a numerical or graphic evaluation, focusing on the quantity or degree of personal performance or characteristics. This evaluation method is usually based on some preset standards or indicators, for example, numerical values or graphs obtained through inspection and scoring, and then analyzed and evaluated.