A student may be identified as having an articulation disorder if one of the following criteria exist:

1. (1) Performance on a standardized articulation test falls two standard deviations below the mean and intelligibility is affected in conversation;
2. (2) Test performance is less than two standard deviations below the mean but the student is judged unintelligible by the speech and language clinician and one other adult;
3. (3) Performance on a phonological assessment falls in the profound or severe range and intelligibility is affected in conversation;
4. (4) Performance on a phonological assessment falls in the moderate range, intelligibility is affected in conversation, and during a tracking period of between three and six months there was a lack of improvement in the number and type of errors; or
5. (5) An error persists six months to one year beyond the chronological age when 90 percent of students have typically acquired the sound based on developmental articulation norms.

Source: 23 SDR 31, effective September 8, 1996.

General Authority: SDCL 13-37-1.1.

Law Implemented: SDCL 13-37-1.1.