The correct answer is Alternative assessment. A teacher maintaining a portfolio of student work over time is a quintessential example of alternative assessment. This approach moves beyond traditional standardized tests by evaluating student learning through a diverse collection of work, projects, demonstrations, and artifacts accumulated over a period. Portfolios provide a holistic and authentic view of a student's progress, showing their development, skills, and understanding in real-world contexts, rather than just a snapshot of knowledge. They often involve self-reflection and can be highly individualized, focusing on the process of learning as much as the final product.
Option A, Summative assessment, is incorrect because while a portfolio can be used to inform a summative judgment at the end of a unit or course, the act of actively maintaining it over time for ongoing evaluation fundamentally aligns with the broader category of alternative assessment methods, which are distinct from typical end-of-unit tests.
Option C, Standardized testing, is incorrect. Standardized tests are designed for consistent administration and scoring across a large group to compare performance. Portfolios, by contrast, are highly flexible, individualized, and context-dependent, directly opposing the nature of standardized testing.
Option D, Entrance examination, is incorrect. An entrance examination is a specific type of test used to determine eligibility for admission to an institution or program. It is a one-time assessment with a very narrow purpose and is entirely different from a teacher collecting and evaluating student work over time.