What distinguishes a pre-test from a post-test?

• A. A pre-test measures knowledge after instruction, while a post-test measures knowledge before
• B. A pre-test evaluates knowledge before instruction, while a post-test assesses knowledge after
• C. A pre-test is given to measure performance in students, whereas a post-test is for teacher evaluation
• D. A pre-test is based on opinion, while a post-test is based on fact

Answer: (B)

The distinction between a pre-test and a post-test lies fundamentally in the timing of their administration relative to an instructional period. A pre-test serves as an assessment tool to gauge the existing knowledge, skills, or competencies of students before they engage with new material or instruction. This initial evaluation helps educators identify what students already know, what misconceptions or gaps in understanding they may have, and informs lesson planning by tailoring instruction to meet learners' needs.

Conversely, a post-test is administered after the instructional period has concluded and serves to assess the extent of knowledge or skill acquisition that has occurred as a result of the instruction. This test evaluates what students have learned, how well they have understood the material, and ultimately measures the effectiveness of the instructional methods employed.

This clear temporal distinction is vital for educators to analyze the impact of their teaching. In contrast, the other choices present inaccuracies regarding the purpose or implementation of pre-tests and post-tests, failing to capture their core functions in the evaluation process.