What an 8th grader should know by the end of the year

Eighth grade prepares students for high school. In math they solve linear equations and systems of equations, meet functions, and use the Pythagorean theorem. In reading and writing they analyze how texts are built, spot irrelevant evidence, and judge conflicting sources.

Checked October 29, 2026 against the sources listed at the end.

The big goal of 8th grade

Math: linear equations, functions and the Pythagorean theorem, the foundation of high school algebra and geometry. Reading and writing: citing the strongest evidence, analyzing structure, and weighing sources that disagree.

Reading and writing

Cites the evidence that most strongly supports an analysis of a text.
Analyzes how dialogue and events move a story forward and reveal character, and how differences in point of view create suspense or humor.
Compares the structure of two or more texts and how it shapes their meaning.
Evaluates an argument and recognizes when irrelevant evidence is introduced; analyzes where two texts disagree on facts.
Writes arguments, informative pieces and narratives, and gathers information from several sources, judging their credibility.
Uses verbals (gerunds, participles, infinitives), active and passive voice, and punctuation for pauses and breaks.

Math

Knows that some numbers are irrational (like √2) and estimates them; uses square and cube roots.
Works with integer exponents and scientific notation.
Solves linear equations in one variable, including ones with no solution or many solutions, and solves systems of two linear equations.
Understands functions as rules with one output for each input, and graphs and compares linear functions (y = mx + b, slope as rate of change).
Uses rotations, reflections, translations and dilations to understand congruence and similarity, and the angles formed by parallel lines.
Uses the Pythagorean theorem, finds volumes of cones, cylinders and spheres, and reads patterns in scatter plots and two-way tables.

Science

The science standards treat grades 6 to 8 as one band; many schools teach physical science in eighth grade, but the order varies.
Physical science topics include atoms and the periodic table, chemical reactions, forces and motion, and energy.
Life science topics include natural selection, adaptation and genetics.
Earth and space topics include the solar system, gravity, and human impacts on Earth's systems.

How to help at home

Ask which math course your child will take in ninth grade, and what they need to be ready for it.
Talk about news and claims at home: who is saying this, what's their evidence, does another source agree?
Let your child plan their own week, with you as a check-in rather than the manager.
If there are math gaps from earlier grades, the summer before high school is a good time to close them; our summer plan starts with math.
Keep talking about books, films and ideas; arguing kindly at the dinner table is good practice.

Questions to ask the teacher

Which ninth-grade math and English courses do you recommend for my child, and why?
Are there gaps we should work on over the summer?
How does my child handle long-term projects and deadlines?
Who should we talk to about high school planning?

Teachers see your child every day and know what the class is working on this month. Ask first, then practice what they suggest; the two of you pulling the same way is worth more than any workbook.

Where this list comes from

Reading, writing and math come from the Common Core State Standards for 8th grade, put in plain words; we summarize, so read the standards themselves for the exact wording. Science follows the topic list of the Next Generation Science Standards. Social studies has no national standard, so that part describes what many schools teach in 8th grade.

Your state sets what is taught, and states differ. Many use the Common Core State Standards for reading and math, or standards written from them; others wrote their own. Your state's education department posts its standards, and your child's teacher can tell you exactly what the class covers and when.

Questions parents ask

Should my child take Algebra 1 in eighth grade?

Schools decide course placement differently, based on grades, test scores and teacher recommendation. Ask the math teacher and the school counselor what they recommend for your child and why, and what each path leads to in high school.

What should an eighth grader know before high school?

In math, linear equations and functions are the key. In English, writing an argument with evidence and reading critically. Organization and asking for help matter as much as any one skill.

Practice at your child's level

Peabody, our site for children, has free stories and learning games written at each reading level and math grade, with no sign-up. Start where your child is comfortable, not where the calendar says.

Reading level 12: where 8th grade starts What the level reads like, a sample, and the free stories written at it.
8th grade math on Peabody The year's math path, every part open, with games that practice it.
Short stories for 8th graders Free stories at the grade's level, to read together or alone.
Start reading on Peabody Peabody asks your child's grade, starts the stories a little under it, and moves the level as books run easy or hard.

Where this comes from

Written for parents, to use alongside your child's teacher, not instead of them. General information only, not professional, medical or legal advice. Checked on October 29, 2026. Something wrong or out of date? Write to hello@peabody.kids.