Placement decides the term

A student in the wrong level will not recover it by working harder.

Placement determines whether a student spends a term making progress or being either overwhelmed or unoccupied. It is usually done with a short written test and sometimes a brief interview, and it produces a single level from an assessment that measures one or two skills.

The systematic error is placing on written performance alone, because written tests are cheap to administer and mark. Students whose speaking is far ahead of their writing, which is common where the learner has been in an English-speaking environment, are placed low and are bored. Students with strong grammar from formal instruction and no speaking are placed high and cannot participate.

A two-minute conversation resolves most of this and is the single highest-yield addition to a placement process. It also identifies the students who will need support for reasons unrelated to level: interrupted education, limited literacy in any language, or anxiety severe enough to prevent participation.

The other discipline is being willing to move students in the first week. A placement is a hypothesis and the teacher has better information by day three, and a system that treats level changes as administratively difficult will leave students in the wrong room for a term.

There is a further placement consideration that is easy to overlook, which is literacy in the first language. A student with limited formal education in any language faces a different task from one with a degree who lacks English, and placing them together by test score produces a class where the teacher is addressing two entirely different problems.