The phrase "diagnostic purposes" means using something, like a test or examination, to understand or identify the cause of a problem or condition. Full definition
We support accountability and assessment measures when used to look at the entire growth of a child over the course of a year and uses standardized testing for diagnostic purposes only. (fundeducationnow.org)
We will perform statistical analysis to produce a quantitative rules for early diagnostic purpose that are based on the detection parameters. (brightfocus.org)
During the period covered by our data, however, these tests were used for informative and diagnostic purposes only (though they were publicly reported each year at the school level). (educationnext.org)