Brookfield's Critical Lenses

A teacher reflecting only from her own viewpoint can run the cycle for years and never see her practice clearly. Brookfield’s contribution was to name three other viewpoints worth holding alongside it. Self, students, peers, and theory. Each lens shows something the others miss.

Where the lenses come from

Stephen Brookfield, writing in 1995, argued that critically reflective practice depends on viewing teaching from more than one angle. He described four “critical lenses.” Each lens is a different kind of evidence about the same practice.

Brookfield’s claim is that all four lenses are needed. Drop any one and the picture distorts.

The self lens

Personal experience is sometimes dismissed as anecdotal. Brookfield disagreed. He wrote that our autobiographies are one of the most important sources of insight into teaching to which we have access (Brookfield, 1995, p. 31).

The self lens involves the teacher examining her own learning history, her own response to a class, her own emotions and reactions. It is reflection in its most personal form.

The risk of relying only on the self lens is that it confirms what the teacher already believes. The fix is not to drop the lens; the fix is to use the other three alongside it.

The student lens

Brookfield argued that the most fundamental criterion for judging whether good teaching is happening is the extent to which teachers deliberately and systematically try to get inside students’ heads and see classrooms and learning from their point of view (Brookfield, 1995).

The student lens means the teacher uses student response, student writing, student feedback, and student behaviour as data. The lens is uncomfortable because it often shows the lesson the teacher thought she gave was not the lesson the students received.

A short example. A teacher is sure her introduction is clear. The student lens, applied through anonymous feedback, reveals that half the class was lost in the first three minutes. The discrepancy between the two views is exactly what the lens is for.

The peer lens

Other teachers see things the teacher cannot see about her own practice. The peer lens uses observation, conversation, and shared reflection with colleagues to surface what is invisible from the inside.

Peer feedback is most useful when it is honest. A peer who only encourages does not extend the teacher’s view. A peer who challenges, while staying respectful, opens up the practice. The link to the critical friend role is direct.

The theory lens

Educational literature carries the field’s accumulated thinking. The theory lens uses published research and writing to interpret what the other three lenses surface.

Theory does not arrive with a single answer. Different writers disagree. The teacher’s job is not to find the right theory but to find theories that explain what is happening and that suggest different ways forward.

A teacher who reads about cognitive load and recognises the pattern in her own lessons has just used the theory lens to make sense of self, student, and peer evidence.

When reflection becomes critical

For Brookfield, reflection becomes critical (rather than just thoughtful) when teachers do two things.

Examine how power supports and distorts the educational process

Education sits inside power structures. Curriculum decisions, assessment systems, school cultures, and national policies shape what teaching can do. A reflective teacher who never names these forces is reflecting inside the system without examining the system. Critical reflection asks how power shows up in the lesson.

Challenge their own untested assumptions

The harder move. The teacher names a habit, examines the assumption behind it, and asks whether the assumption holds. Brookfield’s framing notes that some practices appear to make teaching easier in the short term but actually work against the teacher’s long-term interests. Examples: lecturing because it feels safer than discussion, sticking to a textbook because designing lessons takes time, avoiding controversial topics because they make the class harder to manage. Each of these may have unexamined costs.

Flashcard

What two conditions does Brookfield say turn reflection into critical reflection?

Tap to reveal

Answer

Examining how power shapes the educational process, and challenging untested assumptions

Without these two moves, reflection can be careful and still leave the deeper structures untouched. Brookfield’s critical lenses provide the evidence; the two critical moves provide the questions that turn the evidence into change.

Tools: the critical incident questionnaire

Brookfield offered several practical tools. The most widely used is the Critical Incident Questionnaire (CIQ), a short anonymous survey given to students at the end of a class or week. Five questions:

1. At what moment in class did you feel most engaged with what was happening?
2. At what moment in class were you most distanced from what was happening?
3. What action that anyone (teacher or student) took did you find most affirming or helpful?
4. What action that anyone took did you find most puzzling or confusing?
5. What surprised you most? (This could be about your own reaction, or anything else)

The CIQ is short enough that students will actually fill it in, and specific enough that the answers are useful. The teacher reads the answers, looks for patterns across students, and uses the patterns as data for the next round of reflection.

A common discovery for teachers running the CIQ for the first time: the moment they were most pleased with is not the moment students felt most engaged, and the moment they thought worked least well is sometimes the one students remember most.

The Critical Practice Audit

Brookfield also suggested a Critical Practice Audit (CPA), a longer self-examination of practice. It asks the teacher to list current routines, identify the assumptions behind each one, examine whether the assumption holds, and consider what alternatives exist.

The CPA is slower than the CIQ. It works better as a once-a-term exercise than a weekly tool.