InventumInventum
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Crimson Global Academy

Which Online School Is Actually Worth the Price?

Both deliver Cambridge IGCSEs and A-Levels online with real flexibility. One charges $2,780–$4,500 per subject. The other starts at €730. This guide breaks down what you're actually paying for.

Inventum
Crimson Global Academy
Price per subject
From €730 per subject
$2,780–$4,500 per IGCSE/A-Level subject
1-on-1 teaching
1-on-1 sessions with your subject teacher
Premium Da Vinci track only (extra cost)
Student support
Pastoral Success Coach included
Form tutor + pastoral dean + counsellors
Behind the school
Independent online school
Division of Crimson Education (admissions consulting)

€730

Starting price per subject

1-on-1

Teacher sessions included

24/7

Content access

3

Learning journeys

How it works

How Inventum Works

Crimson Global Academy offers three modes — group, 1:1 (Da Vinci), and async (Flex) — but their 1:1 track is a separate premium on top of an already premium price. Inventum includes 1-on-1 teacher sessions across all journeys, starting at €730.

Journey 1

Fully Asynchronous Learning

24/7 access to our premium core curriculum materials. Study entirely at your own pace, free from any bell schedule or forced live attendance. Perfect for highly independent learners.

Ideal for: Independent learners, professional athletes, globally mobile families

Journey 2

Recorded Precision Teaching

Expert recorded lessons you can pause, rewind, and re-watch until mastery is achieved. World-class instruction without rigid scheduling — study when you're most focused.

Ideal for: Students who need structure but can't commit to fixed time slots

Journey 3

Live Precision Teaching

Small-group live sessions — intimate, discussion-based, and taught by a specialist. The same personal attention Crimson charges a premium for, at a fraction of the price.

Ideal for: Students who thrive on real-time interaction and collaborative problem-solving

Head-to-Head Comparison

Inventum vs. Crimson Global Academy

Price per subject
Inventum

From €730 per subject per year

Crimson Global Academy

$2,780–$4,500 per IGCSE/A-Level subject; $15,500–$25,500 full-time

1-on-1 teacher sessions
Inventum

1-on-1 sessions with your subject teacher included

Crimson Global Academy

1:1 only on premium Da Vinci track — additional cost on top of standard fees

Class size
Inventum

Small-group live sessions or fully independent

Crimson Global Academy

10–12 students in group classes

Total Transparency

The Real Cost Comparison

Crimson Global Academy's fees are among the highest in online education. Three A-Level subjects can cost $8,400–$13,500 before exam fees, textbooks, and the $160 application fee. Inventum charges a one-time €250 registration fee and transparent per-subject pricing — nothing else hidden.

Pricing structure

Inventum

Per-subject, fully modular

Crimson Global Academy

Per-subject or full-time bundles

3 A-Level subjects

Inventum

~€2,595 (~£2,210)

Crimson Global Academy

$8,400–$13,500 + exam fees + textbooks

1-on-1 teaching

Inventum

Included with subject teacher

Crimson Global Academy

Separate premium (Da Vinci track only)

Application fee

Inventum

€250 registration fee

Crimson Global Academy

$160 non-refundable

Payment options

Inventum

Flexible: 1, 3, 6, or 10 instalments

Crimson Global Academy

Term-based or annual upfront

Three A-Levels with Inventum cost up to 6x less than Crimson Global Academy — for the same Cambridge qualifications.

See full pricing breakdown
Which School Is Right for You?

The Honest Answer

Crimson Global Academy might suit you if...

  • Budget is not a concern and you want the prestige of a premium brand name
  • Your child needs both Cambridge and US curriculum (AP / High School Diploma) from one school
  • You're already planning to invest in Crimson Education's university counselling ecosystem
  • Your child is targeting Ivy League or Oxbridge and wants institutional support structured around that goal

Inventum is built for you if...

  • You want Cambridge-quality online teaching without paying $2,780–$4,500 per subject
  • You want 1-on-1 sessions with your subject teacher included — not locked behind a premium tier
  • You need total scheduling flexibility without being funnelled into an admissions consulting ecosystem
  • You want transparent, subject-by-subject pricing — a €250 registration fee vs $160 + fees that can reach $13,500+ per year

Next step: Schedule a personal discovery call

Book a free academic fit call for your child.

Get an academic assessment, ask your questions, and leave with a clear online school plan before you make an enrolment decision.

  • Free academic assessment
  • No obligation to enroll
  • 30-day money-back guarantee
  • Cambridge & Pearson accredited

Frequently Asked Questions.

All the tests and exams in the Upper Primary (Year 5 & Year 6) and Lower Secondary (Year 7-Year 9) are internal Inventum exams taken online. For the second year of the IGCSE program (Year 11), AS (Year 12), and A-Levels (Year 13), the exams have to be taken in a physical Cambridge or Pearson exam centre. You can find the list of exam centres worldwide here.

For the Upper Primary (Year 5 & Year 6) and Lower Secondary (Year 7-Year 9), you will receive a certificate from Inventum when you complete a year level. Cambridge issues your certificate for IGCSE. For AS and A-Levels, your certificate comes from Cambridge or Pearson, depending on which board's syllabus you follow.

Successful completion of A-Levels will give you access to universities around the world. This is the most recognised secondary school certificate globally by universities and employers.

In principle, this is possible, but it will require your time and dedication. You will still pay the fees for two years, as you will have access to 121 teaching, live lessons, etc., for both years.

You decide on the study schedule based on your preferences and timetable. Your dedicated study coach can help you make a schedule that suits your circumstances. When choosing Journey 3, you also commit to the live lessons schedule.

We use precision teaching, meaning the live lessons cover only the critical and most difficult parts of the curriculum. On average, there are two live lessons a week per subject.

This will depend on yourself, the number of chosen subjects and the year level, but on average, a full-time Learner spends approximately four hours a day studying.

The Upper Primary (Year 5 & Year 6) and Lower Secondary (Year 7- Year 9) have five mandatory subjects: English, Maths, Science, History and Geography. There are no mandatory subjects for IGCSE (Years 10&11) and A-Level programs (Years 12&13), but you choose them based on your interests and future plans.

For the Upper Primary (Year 5 & Year 6), Lower Secondary (Year 7-Year 9), and IGCSEs (Years 10&11), you will be required, as a full-time student, to take a minimum of five subjects and for the A-Level program (Years 12&13) a minimum of three subjects.

You can complete the application form on our website by clicking the “Apply” button.

Once we receive your application, we will contact you within 48 hours to arrange an onboarding call. During this call, you will be introduced to all our platforms, handbooks, and practices and assigned a dedicated study coach. After this, you are ready to start!

We are a non-selective school and will therefore not require a certain grade average, but we will assess every case individually. Learners need, however, to be fluent in English as this is the language of instruction.

We look at the Learner’s age and previous schooling history to determine the best starting point for them at Inventum. If there are any doubts, we recommend the Learner take a CAT4 test.

Our high flexibility learning model, combined with the level of support Learners can choose from, is a unique feature among online schools. Together with the Learner, we build the learning journey that caters to their individual needs. By following our mindset modules, we ensure they are ready for the future by educating them on emerging technologies and ensuring they grow as individuals.

Cambridge certificate is recognised globally by universities. We do not, however, have agreements with local educational authorities, so it is the parent’s responsibility to check the rules and possible restrictions for homeschooling or online schooling in their home country.

A-Levels ask students to specialise in three or four subjects in depth, while the IB requires six subjects across a broad range plus an extended essay and Theory of Knowledge. Both are recognised for university entry worldwide.

Read the full IB vs A-Levels comparison