Has it ever struck you that most initial placement (level) tests are actually (mid or final) achievement tests--they provide limited information of the overall strengths and weaknesses of prospective students. They just leave them feeling inadequate for not being able to respond to a single question from a coursebook they've never studied.
As for course achievement tests, here's something to ponder regarding
content- vs
objective-based testing:
The alternative approach is to base the test content directly on the objectives of the course. This has a number of advantages. First, it compels course designers to be explicit about objectives. Secondly, it makes it possible for performance on the test to show just how far students have achieved those objectives. This in turn puts pressure on those responsible for the syllabus and for the selection of books and materials to ensure that these are consistent with the course objectives.
Tests based on objectives work against the perpetuation of poor teaching practice, something which course-content-based tests, almost as if part of a conspiracy, fail to do. It is my belief that to base test content on course objectives is much to be preferred: it will provide more accurate information about individual and group achievement, and it is likely to promote a more beneficial backwash effect on teaching.
From Testing for Language Teachers Cambridge University Press ©1989 by Arthur Hughes
Currently I'm teaching from a highly content-driven syllabus. The courses I've started teaching 2 months ago expect children (from flashcards prompts) to be able to ask and answer sets of limited-response type questions by the end of the course:
Have you been overseas? Do you like oranges? etc. The expectation is that through continual drilling, children will eventually pick up the vocab and questions but I'd rather test them on their
understanding by their ability to make their own questions and answers from a wider vocabulary than that given. So basically, I and my colleague are having to redefine the objectives of our courses to meet the needs of our students.