TACHS reported-percentile target
Compare a reported NPR or LPR with your own target for the same subject and norm group.
Open toolHow TACHS Scoring Works
The Home Report gives national and local percentile ranks for achievement areas and Ability. Total Achievement is a weighted composite; do not average the visible percentiles.
Updated October 3, 2026
The score scale
Reported NPR and LPR are percentile ranks, not percentage correct or a published raw-score scale. Accessible guidance does not explicitly establish report endpoints.
The report separates Reading, Written Expression, Mathematics, Total Achievement and Ability. Keep the subject label and the norm-group label together: a Reading NPR and a Mathematics LPR measure different comparisons.
NPR compares the student with a national eighth-grade reference sample; LPR compares with students taking TACHS in the participating dioceses. A student can have different national and local ranks because the reference groups differ, even though the underlying performance is the same.
For example, a reported Reading NPR of 68 places that performance at or above about 68 percent of the national reference group under the official interpretation. It does not mean 68 percent of Reading questions were correct. The public guidance does not provide raw scores or percent-correct results.
Total Achievement is described as a weighted combination of Reading, Written Expression and Mathematics. The public documents do not supply the necessary weights and norms. Averaging three displayed percentile ranks cannot reconstruct that composite, and Ability is a separate reported area.
Use a report to identify relative strengths, then examine actual practice errors to decide what to study. A lower rank can suggest an area to investigate, but it does not identify which skill or how many questions were missed.
The rank-conversion PDF linked by the administrator is a placeholder. This course therefore reports practice accuracy and a same-field percentile-point comparison only; it does not convert practice answers into official ranks.
Use your official score report
Score calculators need the scores from your official report. Your accuracy on practice questions can’t be turned into an official score.