1. What Are “Impact” and “Washback”?
When we
talk about test impact or washback, we are referring to the ways
that assessments influence teaching and learning—sometimes in helpful ways,
sometimes not. In fact, researchers use both words to describe this
relationship (Wall, 1997).
- Washback usually focuses on what
happens inside classrooms: how tests shape instructional decisions,
curriculum design, or lesson planning.
- Impact, on the other hand, often
refers to the broader consequences of testing—such as policy
changes or community attitudes toward education.
In simpler
terms, washback is what teachers feel and do in response to tests, while
impact is what societies and institutions experience because of those tests
(Wall, 1997).
2. The
Complex Nature of Influence
It might
sound simple to say, “tests affect teaching,” but the truth is that this
relationship is not a straight line. Teaching practices are also shaped by teacher
beliefs, school support, parents’ expectations, and policy pressures.
That’s why it is misleading to treat test influence as a one-way
cause-and-effect relationship (Cheng & Curtis, 2004).
Think of it
like a ripple effect: the test is a stone thrown into water, but the ripples
depend on the size of the pond, the wind, and even the shape of the stone.
Likewise, a test’s influence depends on its stakes, context, and how teachers
and learners respond to it.
3.
Validity and Consequences
Samuel
Messick (1989) introduced an important idea called consequential validity—the
notion that tests should not only measure accurately but also have ethical
and educationally beneficial effects. When a test produces unfair or
unintended consequences, its validity is at risk.
Two common
threats can distort test results:
- Construct underrepresentation: when a test measures too
narrow a set of skills. For example, a writing test that only includes
narrative essays misses other types of writing such as exposition or
argumentation.
- Construct-irrelevant variance: when external factors—like
cultural familiarity or topic bias—influence performance. For instance,
asking students to describe an international flight may advantage
those who can afford to travel.
In short,
good tests aim to reduce both types of problems. They measure what matters, not
what’s convenient.
4.
High-Stakes Testing: The Double-Edged Sword
High-stakes
tests—like the IELTS or China’s National Matriculation English Test—often shape
teaching profoundly. On the positive side, they can motivate learners and
provide clear goals. Yet, they can also narrow curricula, promote rote
memorization, and increase anxiety (Menken, 2008; Palmer & Wicktor Lynch,
2008).
When the results
of a test determine a student’s future, teachers naturally feel pressure to
“teach to the test.” The challenge, then, is to balance preparation with
authentic learning.
5.
Turning Washback into a Positive Force
Research
shows that teachers can actively shape washback in constructive ways. Drawing
on Spratt’s (2005) review, here are key strategies:
a. Know
the Test—and Its Purpose. Teachers should start by reading the test construct or assessment
manual carefully. Understanding what a test measures allows
educators to teach skills that align with genuine language use—not just test
tricks.
b. Maintain
Agency. Even when
curricula or materials are imposed, teachers still have professional choices.
They can decide what to emphasize, how to sequence lessons, and when
to integrate test-like activities—decisions that collectively foster
positive washback.
c. Integrate
Skills, Don’t Drill Them. Instead of repetitive test practice, teachers can design activities that
integrate skills in meaningful contexts. For instance, if a test includes an
integrated listening–reading–writing task, a teacher might turn it into a
collaborative jigsaw activity where students first listen, then read, and
finally co-write a response. This maintains test familiarity while nurturing
collaboration and communication.
d. Balance
Teaching Methods. Avoid
overreliance on test-taking strategies such as skimming or scanning. These can
be helpful, but only when embedded within broader literacy or communicative
goals. Real learning goes beyond “getting the right answer”—it’s about
understanding and using language effectively.
e. Address
Feelings and Attitudes. Teachers’ own emotions toward testing shape classroom climate.
Discussing tests openly—acknowledging stress while emphasizing growth—helps
students see exams as opportunities rather than threats.
f. Use
Assessment for Learning. Not all assessments are high stakes. Classroom assessments can give
immediate feedback, inform lesson planning, and motivate students through
visible progress. When students understand how their work is assessed, they
gain ownership of their learning.
6. From
Theory to Practice
So, what
can bilingual teachers do to promote positive washback?
- Use varied materials: Combine authentic language
sources with sample test items to build real-world competence.
- Focus on integrated tasks: Connect reading, writing,
listening, and speaking in purposeful ways.
- Encourage metacognition: Teach students how to reflect
on their performance rather than just memorize answers.
- Collaborate: Share experiences with
colleagues to identify where tests support or hinder learning.
- Advocate for fairness: Where possible, speak up about
mismatches between tests and your learners’ realities.
Tests, in
essence, should inform teaching, not dictate it. As Arthur Hughes (1989)
reminded us, “Tests are not the destination; they are signposts along the
road.” The goal is to help learners travel further, not merely to pass
checkpoints.
7. Final
Reflection
The truth
is that washback is inevitable, but its quality depends on how we
respond to it. Tests can inspire creativity, collaboration, and
curiosity—or they can confine them. The key is teacher agency: the
courage to align assessment with genuine learning goals.
In the end,
a good test is not one that changes teaching, but one that supports
teachers in doing what they already know is right—fostering meaningful,
equitable, and lifelong learning.
References
Alderson,
J. C., & Wall, D. (1993). Does washback exist? Applied
Linguistics, 14(2), 115–129. https://doi.org/10.1093/applin/14.2.115
Bachman, L.
F. (1990). Fundamental considerations in language testing. Oxford
University Press.
Cheng, L.,
& Curtis, A. (2004). Washback in language testing: Research contexts and
methods. Lawrence Erlbaum.
Hughes, A.
(1989). Testing for language teachers. Cambridge University Press.
Menken, K.
(2008). English learners left behind: Standardized testing as language
policy. Multilingual Matters.
Messick, S.
(1989). Validity. In R. L. Linn (Ed.), Educational measurement
(3rd ed., pp. 13–103). Macmillan.
Palmer, D.,
& Wicktor Lynch, A. (2008). A bilingual education for a monolingual
test? Language Policy, 7(3), 217–235.
Spratt, M.
(2005). Washback and the classroom. Language Teaching Research, 9(1),
5–29.
Wall, D.
(1997). Impact and washback in language testing. In C. Clapham & D.
Corson (Eds.), Encyclopedia of language and education (pp. 291–302).
Kluwer Academic Publishers.