Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
Drexel University or The Math Forum.



Engineering Good Math Tests
Posted:
Oct 7, 2012 3:37 PM



***************************** From Education Week [American Education's Newspaper of Record], Wednesday, October 3, 2012, Volume 32, Issue 6, p. 23. See http://www.edweek.org/ew/articles/2012/10/03/06burkhardt.h32.html?tkn=WTOFJ6xjinoyM6BBw1BUuskmalCVVBBXrnse&cmp=clpedweek#comments ****************************** Commentary
Engineering Good Math Tests
By Hugh Burkhardt
Narrow math tests inevitably drive down real standards because accountability pressures principals and teachers to teach to the test. Conversely, wellengineered tests of the math we actually want people to study and learn raise standards. It may not surprise you that highperforming countries such as Singapore have better mathematics  as defined in the Common Core State Standards  on their tests than the United States does. More surprisingly, good tests are less expensive in real terms.
There are worrying signs that the actual commoncore assessments will be too close to "business as usual," albeit computerized. If so, most U.S. students and future citizens will be condemned to further mediocrity in mathematics.
The need for better tests is accepted by business, industry, and government. In 2009, President Barack Obama called on "our nation's governors and state education chiefs to develop standards and assessments that don't simply measure whether students can fill in a bubble on a test, but whether they possess 21stcentury skills like problemsolving and critical thinking, entrepreneurship, and creativity."
Since then, the states have led the development of common standards in mathematics that embody this broader vision, and two consortia of states, the Smarter Balanced Assessment Consortium, or SBAC, and the Partnership for Assessment of Readiness for College and Careers, or PARCC, have been funded to develop assessments aligned with the standards. Much progress has been made.
Everyone accepts that, when used as the linchpin of accountability, tests are not "just" measurement, but often direct the efforts of school employees and dominate what is taught in classrooms. The SBAC "content specification" for the commoncore math assessment (which I helped write) features problemsolving and modeling with mathematics, reasoning, and critiques of reasoning, alongside the concepts and skills needed to make these possible.
 SIDEBAR: "To find out if students can do mathematics, we need to find how well they can create, critique, and explain substantial chains of reasoning." 
Crucially, it also includes many examples of assessment tasks that show how these principles have been realized in math examinations in the United States and around the world. Examples are harder to misinterpret than descriptions. Teachers, students, and citizens understand that items on the tests represent the types of tasks students must learn to do.
The feedback to SBAC on this content specification has been overwhelmingly positive. So what is the problem?
A strong undertow of fear appears to be pulling the system back to the familiar. This is a test of our courage  a test our tests may fail.
There is growing concern that test implementation will be a thirdrate realization of the common core  that the design and "engineering" will not be good enough. The problems seem to be caused by a mixture of fear and lack of experience and by a decision making structure unsuitable for innovation. State assessment directors are fearful of cost and litigation if their welloiled testing systems, already sometimes controversial, have to change. Highquality examinations that cover the common core and meet international standards are outside their experience and their zone of comfort.
In highperforming countries, mathematicscurriculum experts have final say on the problems and scoring of the examinations. Psychometricians are technical advisers. In the United States, the practice has been turned upside down: Psychometricians too often have the final say on the items in a test, while the mathematics experts play a secondary role. SBAC and PARCC continue this upsidedown tradition that values technical measurement above accountability for teaching and learning the core mathematics in the standards.
What is the problem with current tests? Multiplechoice tests and their latest variant  computeradaptive tests  measure with many very short items. The grain size of these items is much smaller than the basic concepts of mathematics. The items have a very indirect relationship to the targets of instruction: the math in the standards. In mathematical reasoning and problemsolving, the whole is more than the sum of the parts. This is recognized in English/language arts, where we assess substantial pieces of reading and writing.
To find out if students can do mathematics, we need to find how well they can create, critique, and explain substantial chains of reasoning. Multiplechoice tests cannot handle this, nor can their computerbased variants. When you look at the "technologyenhanced items" designed to assess "depth of knowledge," you find that potentially rich tasks have been broken into sequences of short items. This ignores the real target: chains of student reasoning that may take diverse paths and be expressed with words, sketch diagrams, and symbols in diverse ways. Mathematics is not treated as a coherent body of mathematical content and practices, but as fragments indirectly related to the target knowledge. This makes a test that defines the targets of instruction invalid.
It is easy to do better. You ask students to tackle tasks that represent the kinds of performance that you really want them to be able to do, not proxy tasks that are easy to assess. As with writing, you have them scored by trained human beings using specific rubrics for each task that award points for the core elements of performance. You audit the process to ensure reliable scoring. This is the way examinations are run in other advanced countries.
A wellmade test matches the depth and balance of the learning targets. This involves selecting an appropriate balance of short items and substantial performance tasks so that teachers who teach to the test, as most teachers will, are led to deliver a balanced curriculum that reflects the standards. This needs a "mathematics board," a body whose members are experts in math education and mathematics. The consortia should establish such panels for task selection and test balancing.
Where will the tasks come from? Designing accessible assessment tasks that demand substantial chains of reasoning is a challenging area of educational design. Test vendors have little experience, and the skills do not come quickly. However, there is a large international literature of wellengineered tasks across this range that can be licensed for use in tests. (Disclosure: A project in which I am involvedthe Mathematics Assessment Resource Service, or MARSis one notforprofit source.)
And what of cost? Vendors charge a dollar or two for traditional tests, and they only need a class period of testing time. People are rightly concerned at "wasting" teaching and learning time. Yet ask teachers how much time they spend on otherwise unproductive test preparation. Typical responses are that test prep for state tests takes 20 days a year. That's more than 10 percent of teachers' time and, worse, more than 10 percent of the students' learning time. This is the real cost of aiming at a cheap target.
Good tests cost a bit more than computerbased tests. How much depends on how you manage them. One inexpensive model is to make scoring training and actual scoring part of each teacher's job. This is highquality professional development, showing teachers what is valued in math performance and what other students can do. If this takes two days a year, you are still well ahead on the testprep clock, with many more days for real teaching and learning than with artificial tests.
What about test prep for good tests? With "tests worth teaching to," that is something you want. Test tasks are valuable learning experiences. The test itself is not a waste of learning time; it is instead exactly the task for which teaching prepares you.  Hugh Burkhardt has, since 1982, led a series of assessment projects with test providers in the United States and the United Kingdom who sought to align their mathematics tests with learning goals. He is based at the University of Nottingham's Shell Center in England, where he works with the Mathematics Assessment Project of the Mathematics Assessment Resource Service, and the University of California, Berkeley. He founded the International Society for Design and Development in Education and chairs the advisory board of its ejournal, Educational Designer. *********************************************  Jerry P. Becker Dept. of Curriculum & Instruction Southern Illinois University 625 Wham Drive Mail Code 4610 Carbondale, IL 629014610 Phone: (618) 4534241 [O] (618) 4578903 [H] Fax: (618) 4534244 Email: jbecker@siu.edu



