"The Iowa test" is what a generation of American parents call the yearly achievement test, from the days when it was the Iowa Tests of Basic Skills in nearly every school. Its current form, the Iowa Assessments, is given mostly by Catholic and private schools, by homeschool families who need a norm-referenced test for state reporting, and by districts that pair it with the CogAT for gifted screening. Riverside Insights' own brochure, test descriptions and timing tables are the source for this page.
Download the Iowa test sheet (PDF) (the levels by grade, the tests in each battery with items and times, the scores on the report explained and a report-reading planner; two pages, free).
What it is
| Iowa Assessments | |
|---|---|
| Publisher | Riverside Insights (developed at the University of Iowa); Forms E, F and G, built to one blueprint |
| Grades | Kindergarten to 12, Levels 5 to 17/18 |
| Format | Paper or online; group-administered by the school |
| Batteries | Complete (all tests), Core (reading, language, mathematics) or Survey; single subjects possible |
| Norms | National, fall 2017; Catholic and private school norms available; local norms on request |
| Scores | National percentile rank, standard score, grade equivalent, stanine, normal curve equivalent; Lexile and Quantile measures; college-readiness indicators from grade 6 |
| Pairs with | The CogAT (ability); the Talent Identification report blends the two for gifted screening |
The levels by grade, and what is in each
| Level | Grade | Tests, items and working time |
|---|---|---|
| 5 | Kindergarten (mid-year) to early grade 1 | Vocabulary, Word Analysis, Listening, Language, Mathematics, Reading; 146 items, about 2 h 30 min, read aloud, untimed |
| 6 | Grade 1 | The same tests with Reading in two parts; 191 items, about 2 h 50 min, untimed |
| 7 and 8 | Grades 1 to 3 | Adds Computation, Social Studies and Science; Complete 278 to 297 items (about 4 h 10 min), Core 220 to 239 items (3 h 20 min); untimed |
| 9 to 14 | Grades 3 to 8 | Reading, Written Expression, Mathematics, Science, Social Studies (Vocabulary, Word Analysis and Computation at the lower levels); timed |
| 15 to 17/18 | Grades 9 to 12 | Reading, Written Expression, Mathematics, Science, Social Studies; 40 to 50 items each, about 302 in all; timed |
The level number tracks the grade (Level 9 is the usual grade 3 test, Level 10 grade 4, and so on to Level 14 in grade 8), with enough overlap that a school testing in fall can use the lower level; Riverside's own demo report shows a grade 3 class on Level 8 in August. Levels 5 to 8 are read aloud by the teacher and are not timed; the working times are estimates for scheduling. From Level 9 each test has a time limit.
At the primary levels, Word Analysis is phonics and word parts; Listening is understanding spoken passages with picture answers, so it does not depend on reading; Language is usage and expression; Computation is arithmetic without the word problems that make up Mathematics. From grade 3, Written Expression replaces the separate language tests and Reading combines vocabulary and comprehension, while Science and Social Studies are included in the Complete battery only.
The scores on the report
| Score | What it is | How to read it |
|---|---|---|
| National percentile rank (NPR) | The percentage of same-grade students in the national norm group scoring at or below the child | 50 is the national average; 75 the top quarter; 90 the top tenth. Percentile units are unequal: 50 to 55 is nothing, 90 to 95 is a lot |
| Standard score (SS) | Riverside's equal-interval developmental scale, running across grades | The number to compare with last year's: it should rise every year, and by about the same amount as the norm group's |
| Grade equivalent (GE) | The grade and month at which the child's raw score is the median (a GE of 5.3 is the third month of grade 5) | A grade 3 child with a reading GE of 5.3 reads the way a median early-5th grader does on this test; it is not a placement and does not mean the child can do 5th grade work |
| Stanine | The percentile rank in nine bands, 1 to 9 | 4 to 6 is the middle; 7 to 9 above average; 1 to 3 below |
| Normal curve equivalent (NCE) | A percentile-shaped scale with equal units, 1 to 99 | Used by programs for averaging and growth; 50 is average |
| Lexile and Quantile | Reading and maths placed on the MetaMetrics scales | For matching books and maths materials to the child |
The report also prints the percent correct by skill within each test, which is the page for teaching: a 4th grader at the 70th percentile in mathematics overall and 30 percent correct in fractions has a fractions problem.
Who gives it, and why
- Catholic and private schools give the Complete or Core battery every spring as their norm-referenced measure, often with the CogAT in grades 2, 4 and 6; the Talent Identification report blends achievement, ability and a giftedness scale for programme placement.
- Homeschool families use it where the state requires an annual norm-referenced test, through an approved administrator; the national percentile rank is the number the state reads.
- Districts and gifted programs use the reading and maths totals beside the CogAT (its page) for identification, commonly asking for the 95th percentile or above on achievement together with an ability score.
- Schools tracking growth read the standard score year over year and, from grade 6, Riverside's college-readiness indicators.
Reading the report, and what to do
- NPR by test for the picture; the composite hides the subjects.
- Standard score against last year for growth: flat is the warning, not a low rank.
- The skills page for the lesson plan: the lowest skill in the lowest test.
- Grade equivalent only as a curiosity; never as a case for acceleration or retention.
- If the school also gave the CogAT, ask for the ability-achievement comparison: achievement well below ability is the pattern that calls for a look at how the child is being taught; achievement above ability is a hard-working child who should not be pushed by the test.
The classroom diagnostics (i-Ready, MAP, Star) are given more often and report against grade-level standards or RITs; the Iowa is the once-a-year national ranking, and the two kinds of number should not be expected to agree.
Download the Iowa test sheet (PDF) (the levels, the tests, the scores and the planner; two pages, free).
Where to get help
A 1-on-1 online class with a tutor who holds a master's degree and teaches the US curriculum from Grade 1 number work to AP Calculus, chemistry and physics, at 7 am before school, after 4 pm and on weekend mornings, US time, for US$10 to $13 an hour: the report read together in the free 30-minute first class, the domain or the skill the score is really pointing at found, and the term spent on exactly that, with the method written out the way the school marks it. How online tutoring from India to the USA works, or the 1-on-1 online tutoring page.
Sources: Riverside Insights, Iowa Assessments overview brochure (Forms E, F and G built to one blueprint; Complete, Core and Survey batteries; Lexile and Quantile measures; college and career readiness from grade 6; the standard score growth continuum; fall 2017 norms and the national percentile rank and grade equivalent on the sample reports; private and Catholic school norms and local norms; the testing times and levels tables for Levels 5 to 8); Riverside Insights, How Many Questions and How Much Time Is Allotted for Iowa Assessments (July 2025): items and approximate working times by level, Levels 5 to 8 untimed; Riverside Insights, Iowa Assessments Test Descriptions (the content of each test by level); Riverside Insights, CogAT Form 7 Score Interpretation Guide for the percentile-rank caution. Fetched 11 November 2026.
Questions parents ask
1What is the Iowa test?
2What grades take the Iowa test?
3What is on the Iowa test and how long is it?
4What do Iowa test scores mean?
5What is a good Iowa test score?
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