Many persons have developed the understanding that the evaluation of a given student's reading ability must take the form of the administration of a commerical, standardized reading test. Though the results of a standardized test can be valuable, secondary teachers need to develop an evaluation model which encompasses a number of factors. These aspects would include commercial tests, informal techniques, observational devices, and the study of past reading performance data accrued by a reader.
Cushenbery, D. C. (1978). The Role and Function of Informal Reading Evaluation. Reading Horizons: A Journal of Literacy and Language Arts, 18 (4). Retrieved from https://scholarworks.wmich.edu/reading_horizons/vol18/iss4/15