The letter usually arrives in the spring. Your third grader did not score high enough on the state reading test, and the district is considering having them repeat the year.
This is not an ordinary school decision, and it is not usually the teacher's call. Most states now have a third-grade reading retention law, passed on the theory that a child who cannot read by the end of third grade will spend every year after that falling further behind. Florida's version, in place since 2003, is the model most other states copied, and it is also the one with enough history to actually study.
Who decides
Under a typical third-grade law, a student who scores below a set level on the state reading test is retained unless one of the law's exemptions applies. The decision belongs to the school or district. Parents are notified, sometimes consulted, and in most of these states cannot simply refuse.
That is narrower than it sounds, because it applies to one grade and one subject. In other grades, retention is normally a recommendation from the school, arrived at in a meeting, and most districts will not push it past a family that says no. The policy governing all of this is written down. Ask the district office for its promotion and retention policy, and read what it says about who signs off.
Every one of these laws has an exemption list, and it usually covers English learners with fewer than two years of English instruction, students with disabilities whose individualized plan already addresses reading, students who can show grade-level reading through an alternative test or a portfolio of their own classwork, and students who have already repeated a grade. The portfolio option in particular is used far less often than it could be, because it takes a teacher's time to assemble and nobody offers it if the family does not ask.
What Florida's two decades actually show
Because Florida drew a hard line at a test score, researchers could compare students who fell just below it against students who landed just above, two groups who are otherwise nearly identical. That design makes the Florida results the most credible evidence anyone has.
The findings do not settle the argument so much as complicate both sides of it. Retained students initially outperformed their promoted counterparts by roughly a full year's worth of growth in reading and math, and the advantage held for several years. Then it eroded. A 2017 analysis found the effects were statistically insignificant within about five years when compared with same-age peers. Looking at the same students in high school, retention raised grade point averages and reduced how many remedial courses they had to take, and had no effect on whether they graduated.
In Florida, a retained third grader is entitled to a high-performing teacher, 90 minutes of daily reading instruction, and intensive intervention. The retention is not the treatment. The instruction is. A child who repeats third grade with the same teacher, the same materials, and the same approach that did not work the first time is being asked to absorb the same year twice.
The costs nobody puts in the letter
Retention has real downsides, and the honest version of this decision weighs them. A retained student is a year older than their classmates for the rest of school, which matters more socially at 13 than at 8. Older-for-grade students are more likely to drop out, though disentangling that from the struggles that led to retention is difficult. And a retained student will reach the age at which attendance stops being compulsory earlier in their schooling than their peers, which is a mechanical consequence people rarely think through.
Against that, promoting a child who cannot read into a fourth grade where every subject is taught through reading has its own well-documented cost, which is the case social promotion critics make. We laid out both sides in the argument over whether teachers should be allowed to fail students.
What to ask
Ask what the score actually was, and what it means, since a point below a cut score and far below it are different situations. Our guide to reading your child's state test scores covers how to interpret the report. Ask which good-cause exemptions were considered and why each was ruled out. Ask for that in writing. Ask what will be different about next year: which teacher, how many minutes of reading instruction daily, what intervention program, and how progress will be reported to you. If the answer is that your child will simply be in third grade again, that is the answer to act on.
And ask whether the school has screened for a reading disability. A child who has been struggling for three years despite good instruction may be describing dyslexia rather than a slow start, and the signs of a learning disability are worth ruling in or out before anyone repeats a year.
Sources
Education Commission of the States: Early Grade Literacy, Is Third Grade Retention Effective?
Schwerdt, West, and Winters, The Effects of Test-Based Retention on Student Outcomes over Time (NBER)
Reading Rockets: The Effects of Mandatory Retention



