One-on-one Common Core math from $13.50 a class, taught by the same teacher every week — inside our own classroom software, not a video call. Kindergarten through grade 12.
What is ClassArc?
ClassArc is live one-to-one online maths tutoring for school-age children. One teacher and one child, for 55 minutes. The same teacher every week. Classes run inside our own classroom software, not a video call: a shared worksheet you both write on, a shared whiteboard, and answers that sync live.
The approach
Common Core asks students to explain why a method works, not only to produce an answer. That is why homework often looks unfamiliar to parents who learned differently — the standards deliberately ask for models, number lines and written reasoning.
It is also why memorising steps stops working around grade 4. A student who can only follow a procedure hits a wall when the question asks them to justify it.
Kindergarten through grade 12, taught to the Common Core standards your child's school actually follows.
Affordability
Math builds on itself, so the tutoring that changes a grade is the tutoring that lasts a full year. A discount in the first month matters far less than a price a family can still absorb in the spring.
Affordable does not mean a smaller class: it is the full 55 minutes, one-on-one, with the same teacher, taught in the method your child's school is using.
No joining fee, no materials fee, and any unused class balance is refunded if you stop.
per 55-minute, one-to-one class. The first class is free and no card is required.
What changes a grade
A grade 7 student stuck on ratios usually has a grade 5 fractions gap. The first class looks for it rather than starting the current chapter.
We teach the approach your child's class uses, so they are not holding two conflicting methods at once.
Common Core asks for justification. A child who can explain the method can also, eventually, skip it safely.
Inside a class
Common Core asks students to justify a method, so classes are built around explaining rather than answering quickly.
You cannot assess a child's reasoning from a finished answer. You have to watch it being built.
Why the classroom mattersYour child talks the teacher through a problem from last time. How they explain it shows what they actually understood.
Number lines, area models, whatever the school is using — drawn on the shared sheet by both of them, not shown on a slide.
A problem attempted unaided, with the working written out, because the standards ask for the why and not only the what.
Set in the approach the school uses, so your child is never holding two conflicting methods at once.
Coverage
We follow the standards by grade, and we teach the domain your child's class is on now.
The platform
Most online tutoring is a video call with a shared PDF or a Google Doc. ClassArc built its own classroom instead, because Common Core math is about showing thinking, and thinking is hard to show over a webcam.
The two of them build the model on one shared sheet — number line, area model, whatever the school is using — rather than one person describing it while the other watches.
Your child joins from a browser, with nothing to install and no link to find.
Common Core asks a child to justify their method. You cannot assess a justification you never saw being formed.
Why we built our ownYour first class
The first class is free, lasts the full 55 minutes, and is a real lesson rather than a sales call. No card is required.
The teacher spends it listening to your child explain their thinking, because under the Common Core standards that is where the trouble usually shows first. A grade 7 student who cannot justify a ratio step is often missing something from grade 5 fractions, and that is what the class goes looking for.
You will finish it having watched the teacher explain a method and having seen whether your child engaged with it. Knowing the standards matters, and so does whether a child feels able to say they do not follow. If the fit is wrong, we will arrange a second free class with a different teacher.
We spend the first class listening to your child reason out loud. That is where the gap is audible.
What the free class is forWhy US families choose ClassArc
These are the decisions behind how ClassArc runs, and they apply to every student on the platform.
Never a group and never an app queue. Your child has the full fifty-five minutes, which is what it takes to find the grade 5 gap under a grade 7 problem.
Not a rotating tutor from a marketplace. One person who remembers exactly which standard caused trouble in September.
Real lessons at a set time rather than a self-paced library. A video cannot hear a child explain their reasoning and spot where it goes wrong.
Number lines and area models get drawn on a shared sheet by both of them. The teacher watches the model being built, which is what the standards actually assess.
We ask what your child's class is covering and teach the approach they are being shown, so nobody is holding two conflicting methods at once.
From $13.50 a class, no joining fee, no materials fee, and a refund on any unused balance if you stop.
Prices in US dollars. Every class is 55 minutes, one-to-one, with the same teacher. First class free, no card required.
Where we teach
Common Core is the US system. Four other school systems have their own page, each with pricing in local money.
Common Core and state standards, K–12
Your province's curriculum, grades 1–12
Australian Curriculum v9.0 and your state's syllabus
NZ Curriculum phases and NCEA, Years 1–13
British curriculum schools, then International GCSE and A Level
British curriculum schools, GCSE and IGCSE, then A Level
Five markets, one format: 55 minutes, one teacher and one student, every week.
Common questions
First class
55 minutes. The real classroom. No card. We confirm details on email and WhatsApp within a day.
Last updated · May 2026
When you book a demo or sign up for classes, we collect your name, your child's name, email, WhatsApp number, time zone, and the grade you're inquiring about. That's it. We don't ask for or store any payment details on this website. We don't use trackers, cookies for advertising, or third-party analytics that profile you.
Only to schedule and run your classes, send you class reminders, share homework and progress, and answer your questions. We'll reach out by email or WhatsApp, depending on what you tell us works better for you.
Your teacher, and the small team supporting them at ClassArc. We never sell, rent, or share your information with anyone outside ClassArc. We use Web3Forms to receive form submissions, and standard email and WhatsApp for messaging, nothing else.
We treat any information about your child with extra care. We only collect what we need to teach them well, such as their grade and what they're working on. We never use a child's photo, name, or work in any marketing without the parent's explicit written permission.
You can ask us to show you what we have on file, correct anything inaccurate, or delete your data entirely, at any time. Just email hello@theclassarc.com and we'll handle it within a few days.
Email hello@theclassarc.com. A real person will reply.
Last updated · May 2026
ClassArc is a one-on-one online tutoring service. We provide live, scheduled classes between a teacher and a student, along with homework, feedback, and study support.
Each class is 55 minutes. You can reschedule or cancel a class up to 5 minutes before it starts. If you miss a class without notice, we usually credit it back to your balance and reschedule based on what works for the teacher and student.
The first demo class is free, no card required. After that, plans are billed in advance for the number of classes you choose (8, 24, or ~48). We'll send you a payment link directly once you've picked a plan.
If you want to stop classes at any point, we refund whatever class balance is left on your plan. No questions asked, no friction. Refunds are processed within 7 business days.
We expect students and parents to treat teachers with respect, and teachers to do the same. We reserve the right to end the relationship if classes become unsafe, abusive, or disruptive, with a full refund of any unused balance.
If we update these terms, we'll email you before the changes take effect, so you have time to review them.
For anything, email hello@theclassarc.com.