Classroom Impairment Rating Scale
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About Classroom Impairment Rating Scale
Classroom Impairment Rating Scale (IRS). Teachers rated the level of classroom impairment as adapted from an item on the Impairment Rating Scale (Fabiano et al., 2006). The teacher is asked to place an “X” on a continuum from “No problem; definitely does not need treatment or special services” to “Extreme problem; definitely needs treatment or special services” in considering the impact of any behavioral challenges in the classroom on a visual analogue scale.
The IRS is scored along a 0–6 point scale and greater scores are considered to fall in the impaired range of functioning. In prior work in preschool samples, the IRS exhibited acceptable temporal stability as well as evidence of convergent and discriminant validity (Fabiano et al., 2006). For the present study, the item on classroom functioning was reworded to address overall classroom functioning rather than the classroom functioning of a single student. The IRS was used as an overall indicator of classroom functioning.