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Should I Use edX (Harvard CS50)?

cs50.harvard.edu·Analyzed 1 hour ago·Based on 11 sources

Take Harvard's CS50 online through edX and learn computer science and programming fundamentals. Complete graded projects and earn a verified HarvardX certificate.

Depends

Depends

Take CS50 — the full course is free to audit and widely respected as the best intro to computer science.

Audit CS50 free — elite intro CS. Skip the paid certificate unless you truly need the credential.

Confidence: Medium

3.4/5

SmartCustomer rating

8 reviews

$0

Audit price

Certificate costs extra

Yes

Free tier

Full CS50 content free to audit

2U

Owner since 2021

Founded by MIT and Harvard

Value for money4

Course free to audit; certificate fees criticized

Ease of use4

Users cite user-friendly design

Feature depth4

Graded projects, certificates, business tiers

Security posture3

Platform CVEs exist; disclosure policy present

Pros

  • Full CS50 lectures and problem sets free to audit³
  • Graded projects and verified HarvardX certificate available
  • Financial assistance can reduce course costs
  • Backed by MIT and Harvard heritage; long-running platform
  • Broad catalog beyond CS50, including cybersecurity tracks

Cons

  • Verified certificate costs extra despite free course content³
  • Owned by for-profit 2U since 2021, not the original nonprofit
  • Mediocre review score: 3.4/5 on SmartCustomer²
  • No tutoring or mentorship included in standard courses

Gotchas

  • highCertificate is the only paid part; Reddit users call its pricing 'scummy' versus free content³
  • mediumedX sold to for-profit 2U in 2021; nonprofit-era promises may shift over time
  • mediumCustomer-service complaints are aggregated on complaint sites
  • lowOpen edX platform has published CVEs — relevant to self-hosters, not casual learners

Best for

  • Career-switchers learning CS fundamentals
  • Budget learners happy to audit free
  • Self-paced students wanting Harvard rigor
  • Teams needing structured upskilling

Not for

  • Anyone paying only for the certificate — the content is free anyway
  • Learners expecting tutoring, mentorship, or job placement help
  • Casual learners wanting short weekend courses
  • Buyers who need accredited degree credit

Companies that use it

  • Dartmouth
  • UPV (Universitat Politècnica de València)
  • Twilio
  • University of Cauca

Pricing

Audit

$0

  • All CS50 lectures and problem sets
  • No verified certificate

Verified certificate

Paid one-time fee, set per course

  • Graded projects
  • HarvardX verified certificate

Security

Open edX platform shows published CVEs; edX maintains a responsible-disclosure policy; no major edX.org breach found in sources.

  • Open edX platform CVEsCVE trackers list multiple published vulnerabilities in the Open edX platform, including older releases like Ironwood.
  • Partner platform data leakEdraak, an Open edX-based learning organization, left a student data leak unaddressed for two months.
  • No security page on CS50 site.edu returned no dedicated security page in the scan.

What users say

Users broadly respect the free course quality but frequently criticize paid certificate pricing and mixed support.

Anyone else think that it's really scummy how edX asks so much money for a certificate, that's available for free very easily?
Reddit, r/cs50
Are edX courses really useful? Is it worth paying so much?
Reddit, r/edX
Is edX a legit platform?
Reddit, r/edX

Alternatives

Compare edX (Harvard CS50) with each alternative.

Full analysis

Based on 20+ public sources; review snippets were partially truncated, so numeric ratings are sparse.

Sources

  1. review
  2. review
  3. review
  4. review
  5. news
  6. security
  7. security
  8. official
  9. official
  10. official
  11. review

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