this study presents an analysis of content of the infant / toddler environment rating scale - iters. two brazilian experts in child education analyzed the pertinence of each of the 35 items of the iters to assess the quality of educational environments offered to children 0 - 30 months years old. considering the 70 items assessed, it was verified that in 69 of them there was indication of permanency, and only one suggestion of exclusion. the indications of permanency of the items were thus classified: permanency without suggestions of alterations (56%); permanency with suggestion of adaptation of terms, materials or situations (19%); permanency with suggestion of adding clarifications (11%); permanency with structural or content alterations (10%). the high index of agreement obtained between the two experts (97%) as to the permanency of 34 items, suggests the pertinence of the iters, represented by the 35 items, to assess the quality of care offered in collective educational environments in our context.