A full online school for grades 3 through 12 — English, math, science, history, languages, art, health, and computer science — matched to what your state requires, in all 50 states. It is also a catch-up school: over summer and holiday breaks, a short pre-test finds exactly what slipped, and you relearn only that.
Start below: pick your grade from the index, and that grade's own page opens — its subjects, its lessons, its pre-tests. Lessons are short, in plain words, with big text — read a step, try one question, and move on when you get it.
Three quick questions per subject. The test finds what you already know, so you relearn only what is missing. When you finish, you will see only the list of skills to relearn — no score is shown.
You're only in one grade at a time, so the levels stay folded up — only one level is open at a time. Tap a level to open it and the others shut on their own, then tap your grade to open its page.
Plurp teaches every lesson — one friendly voice in every subject, the way the most-watched education channels use a single explainer students come back to. Or pick one favorite below and that teacher takes over all your lessons instead, for your whole visit. Your favorite stays picked when you change grade, state, or subject. You can change your favorite any time — just tap a different teacher below, even in the middle of a lesson.
Make a cartoon avatar that looks like you: your skin tone, your hair, your eyes, your style. When you're happy with it, tap Save my avatar. Your saved avatar then stands next to your teacher in every lesson — and it's ready for the future, when students can talk and work with classmates here: classmates will see this avatar and your avatar name, never a photo of you. Talking with other students is not open yet — your avatar is the first step, ready and waiting.
Changed your mind later? Just design it again and tap Save — your new avatar replaces the old one everywhere, including in lessons. Your avatar is saved for this visit.
This is your grade's own page. Start with the Skills Test — tap the big teal button on any subject below, or pick a subject here. Three quick questions per subject, and the result is a list of only what to relearn — no score. Then tap Start lesson and your AI teacher walks you through it, one small step at a time.
Tap a subject and its test opens right away.
Progress counts for this visit only — it resets when you close the page.
This school is a great way for kids to catch up during holiday breaks and summer. A break is short, so the work has to be smart: test first, learn only what slipped, in sittings of about 20–30 minutes. Nobody redoes a whole grade here — the pre-test checks off everything your child already knows, and the catch-up plan is built from the gaps that are actually left.
Last term ended with some topics unfinished. Pick the grade just finished, take the pre-test in the shaky subject, and finish only the topics it flags. When the list is empty, the term is truly done.
Once the gaps are repaired, open the next grade's page from the Home index and try its pre-tests. Every topic already known is a head start; the few that aren't are exactly what next year will assume — learn those before the first day back.
Keeping skills warm counts too. Choose any subject you enjoy and finish 2 topics a week, about 30 minutes a week — small, steady, and done. Breaks are for resting as well; this path keeps the rust off without turning the holiday into school.
Pick the grade your student just finished and the subject that feels shaky. Step 1: take that subject's Skills Test (the big teal button at the top of every page also opens it). Step 2: come back here and tap “See my catch-up plan” — the plan lists only the skills to relearn, one per day. No score is shown anywhere.
If your student is behind, you are not alone, and it is rarely as bad as it feels. “Behind” almost never means everything is missing. It usually means a handful of pieces are missing — and everything built on top of those pieces wobbles. Find the missing pieces, repair just those, and the rest often stands back up on its own. That is exactly what this school is built to do.
Start by finding out precisely where the gaps are — not “bad at math,” but which topics. That is what the pre-test on each grade page is for: three short questions per subject, one per key skill, and every skill comes back marked already known or still to learn. Then work the “still to learn” list, one topic at a time, in short daily sittings. Behind is a list, and lists can be finished. Most families are surprised how short the real list is once the topics a child already knows are checked off instead of re-taught.
Three steps, in order. Step 1 — Pre-test: on the Home index, open the grade your child just finished (or is in), and take the pre-test in each shaky subject. It takes a few minutes per subject and it can only help — a wrong answer costs nothing, it just puts that topic on the learning list. Step 2 — Learn only what's missing: work the flagged topics with the AI-teacher lessons, about 20–30 focused minutes a day. Step 3 — Watch the gaps close: as each topic's lesson check question is answered, that topic leaves the list. When a subject's list is empty, your child has caught up in that subject — then, if time remains in the break, try the next grade's pre-tests for a head start.
No — and please don't make them. Re-teaching a child material they already know is the fastest way to convince them they're “bad at school”: it's boring, it feels like punishment, and it spends the break's limited days on the wrong topics. Schools that run catch-up well repeat only what wasn't passed or learned the first time. The pre-test exists precisely so the known two-thirds of a grade is checked off in minutes, and the break is spent on the third that's actually missing.
Math is the subject where one missing piece does the most damage, because math builds like a tower: fractions hold up ratios, ratios hold up algebra. A student who missed fractions in grade 5 can look “lost” in grade 7 even though exactly one link is broken. The fix is to find the link, not restart the tower. Take the math pre-test on the grade page — and if nearly everything is flagged, step down one grade and pre-test there too. Repair the lowest missing link first; the topics above it often start making sense within days.
Reading gaps hide inside every other subject — a child who reads slowly struggles in science and history too, because the textbook is the barrier. The repair is unglamorous and it works: a little reading every single day (short is fine — finishing matters more than length), plus small, frequent writing instead of rare big assignments. Use the English pre-test to find whether the gap is understanding what's read, building an argument, or vocabulary — each has a different fix, and the lessons here target the one your child actually has.
Less than most parents fear. 20–30 focused minutes a day, most days, beats a three-hour Saturday marathon — memory consolidates between sittings, and a child who dreads the sessions learns at half speed. One topic a day is a good rhythm: over a four-week break that's roughly twenty topics, which is more than most students' entire gap list. Keep the same time each day, keep it short enough to end on a success, and let the rest of the break be a break.
Yes — this is the use the school was designed around. Breaks are when catch-up actually fits: no homework competing, no new material arriving daily, and a natural deadline (the first day back) that everyone understands. Run the pre-tests in the first few days of the break, work one topic a day through the middle, and spend the last week on the “Get Ready” path — the next grade's pre-tests — so your child walks back in having already seen what the new year assumes they know.
Normal — gaps travel together, often because one root cause (a rough term, an illness, a move, a teacher change) hit everything at once. Don't split each day four ways. Pick one subject at a time, or alternate days (math Monday/Wednesday, English Tuesday/Thursday). Start with reading if reading is one of the gaps — it unlocks the others. And keep the total day short: two 20-minute sittings on different subjects is plenty; more than that usually buys resistance, not learning.
Watch the lists, not a grade book. Every topic in every subject sits in one of three states you can see on the grade page: already known (checked off by the pre-test), still to learn (flagged by the pre-test), or lesson finished (learned and checked here). Catch-up is working when the “still to learn” list visibly shrinks week to week — the “Your break so far” panel above keeps that relearn list. If a topic stays stuck after two honest attempts, that's information too: that one may need a human tutor's eyes, and now you know exactly which topic to show them.
Behind is a starting point, not a verdict. Every student in this school starts from a pre-test, not a judgment — what they know is honored and skipped, what they don't is taught one small step at a time. One honest note, said gently: these are real lessons matched to your state's requirements, and they teach and give practice — by themselves they do not award course credit or a diploma. If your child needs official credit recovery, pair this with their school or district's program, and bring the topic list — it will save everyone time.
High-school graduation rules are set by each state — how many credits, and in which subjects. Here is your state first, then every state so you can compare. Districts can require more than the state minimum, so always confirm with your state Department of Education and your local district before you plan a diploma.
Credit totals use the usual “one credit = one full-year course” count. A few states count differently — Indiana counts by semester (40 semester credits), New Jersey by points (120), and Nebraska by hours (200) — those are shown converted, with the state’s own count in the detail view. States marked “set locally” have no single statewide credit total; their districts set it.
Almost every state builds a diploma from the same four building blocks, plus electives. This is the shape of it — your state’s exact numbers are in the panel above.
Online school does not need a bell. This is one gentle pattern — about 4 to 5 hours a day, with breaks. Move subjects around to fit your family, work, or health.
Every state treats these differently, and the difference matters legally:
Every lesson here is built the same way: one question as the title, a hook on the first screen, the trap answer named before the method, a prediction before the reveal, tiny steps drawn on the whiteboard, a worked example that fades to a half-finished one and then solo practice, a recap of three lines or fewer, and the next lesson's question as the tease. That recipe was distilled on 2026-11-02 from the most-watched education channels on YouTube and the learning research underneath them. This panel is the evidence — with its limits printed, not hidden.
Read this first: subscriber and view counts below come from third-party tracker sites, each named next to its figures. Trackers disagree with each other, and counts move daily — treat every number here as a scale indicator (“tens of millions of subscribers, billions of views”), not an audited figure.
Channel scale (checked 2026-11-02): AIR Media-Tech — most popular educational YouTubers · FameLifter — top 100 education channels, United States · FindYourKOL — best educational YouTube channels · kabo.sh — Mark Rober subscribers · vidIQ — Khan Academy YouTube stats · Wikipedia — Numberphile · CreatorSpin — Veritasium biography
Research and formats: NTU — summary of the Guo, Kim & Rubin engagement findings · Mayer (2021) — evidence-based principles for instructional videos · Creator Handbook — inside Veritasium, interview with Derek Muller · MIT Teaching + Learning Lab — worked examples · Programming Librarian — TED-Ed lesson structure · Opus — Mark Rober's growth playbook · FamilyTube — SciShow Kids guide · Jack Hartmann — Patreon About · datafield.dev — Kurzgesagt case study · Alan Spicer — YouTube audience retention guide
Every figure on this panel was checked on 2026-11-02 against the source named beside it.
The four core subjects in every state and every grade 3–12 are English Language Arts, Mathematics, Science, and Social Studies / History. On top of those, most states expect health and PE, art or music, a world language in high school, and growing computer-science options. All eight are included here.
Mostly, with local flavor. Most states base English and math on similar national frameworks, science on the Next Generation Science Standards or a state version of them, and each state adds its own history — your state’s history is usually taught in 4th–5th grade and again in middle or high school. That is why the state picker matters: topics here follow the common national pattern, and your state panel shows where your state is specific.
Yes — that is the point of the grade index. Grade 3 gets its own page with bigger text, shorter readings, and hands-on math like multiplication and simple fractions. By grade 12 the same subjects are senior-level: research writing, statistics or pre-calculus, physics or an elective science, and government and economics. Each grade page starts with pre-tests, so both students skip whatever they already know.
Change the state picker. Core subjects transfer well — Algebra I is Algebra I everywhere — but credit totals and a few required courses (state history, health, financial literacy) differ. The compare list in section 3 shows both states side by side.