Khan Academy
Hacker ApprovedThe most recommended of 11 online learning platforms
Free, clear lessons people use to fill math gaps and supplement school. Critics find the videos slow and repetitive and say results depend on consistent practice.
Free, clear lessons people use to fill math gaps and supplement school. Critics find the videos slow and repetitive and say results depend on consistent practice.
84 people gave an opinion
- recommend it
- 67
- criticize it
- 17
- approval share
- 80%
Recommended in 12 of 13 months
- November 2025: recommended
- December 2025: recommended
- January 2026: recommended
- February 2026: recommended
- March 2026: recommended
- April 2026: recommended
- May 2026: recommended
- June 2026: recommended
- July 2026: recommended
- August 2026: recommended
- September 2026: recommended
- October 2026: recommended
- November 2026: not recommended (month in progress)
Owned for 7 years
Median of the 5 owners who said how long they have had it.
Each square is one year.
Why it carries the badge
- 67 people recommend itNeeds 10 or more, met.
- 3.9 recommenders for every criticNeeds 2 to 1 or better, met.
- Recommended in 12 of 13 monthsNeeds 4 or more, met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Free, high-quality learning material
“It's helped tons of children by virtue of making solid learning material available for free on the internet”
Comment from 24 Aug 2026 in “Why Sal Khan't: On Learning by Making but Teaching by Telling” “Khan Academy was free and used to obtain 99th percentile SAT scores.”
Comment from 23 Mar 2026 in “Attractive students no longer receive better results as classes moved online” Clear step-by-step explanations
“It helps build up the problem/solution from the ground up and he goes through each step out loud to help a student understand.”
Comment from 23 Aug 2026 in “Why Sal Khan't: On Learning by Making but Teaching by Telling” “the presentation was exceptionally clear, and focused on developing one little piece of a subject at a time”
Comment from 23 Aug 2026 in “Why Sal Khan't: On Learning by Making but Teaching by Telling” “He really took the time to replicate the manual teaching process of writing on whiteboard.”
Comment from 16 May 2026 in “The CTF scene is dead” Fills gaps and supports school
“they both found it really helpful to look at Khan Academy / YouTube clips to better understand what I was explaining”
Comment from 16 Nov 2025 in “Where Educational Technology Fails: A seventh-grader's perspective” “They complemented school and helped me understand things I'd ignored in class”
Comment from 24 Aug 2026 in “Why Sal Khan't: On Learning by Making but Teaching by Telling” “I have found khan academy to be really good for filling any math gaps”
Comment from 6 Jul 2026 in “Completing a Computer Science Degree on Coursera” Helps adults relearn math
“Khan Academy is a treasure, and is how I re-learned math in my 20s after not taking it seriously in school.”
Comment from 23 Aug 2026 in “Why Sal Khan't: On Learning by Making but Teaching by Telling” “I've heard of adults going through Khan Academy's math curriculum for fun to refresh their math skills.”
Comment from 12 Nov 2025 in “The R47: A new physical RPN calculator” “I had no access to anyone who could teach me calculus as a kid except Khan Academy”
Comment from 16 May 2026 in “The CTF scene is dead”
What people warn about
Each mark is one comment
Distracting gamification and quizzes
“it's that I find it incredibly distracting which means I can't focus as easily on the content”
Comment from 23 Aug 2026 in “Why Sal Khan't: On Learning by Making but Teaching by Telling” “I found the gamification, quizzes, etc. simply distracting.”
Comment from 25 Aug 2026 in “Why Sal Khan't: On Learning by Making but Teaching by Telling” Overhyped as a YouTube channel
“It was a marketing job around a YouTube channel that purported to be a teaching revolution.”
Comment from 16 Apr 2026 in “Why Sal Khan's AI revolution hasn't happened yet, according to Sal Khan” “Khan Academy to me is still just a YouTube channel trying very hard to be something more.”
Comment from 16 Apr 2026 in “Why Sal Khan's AI revolution hasn't happened yet, according to Sal Khan”
Other online learning platforms people recommend
The four most recommended other online learning platforms, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| Khan AcademyThis page | 67 | 17 | 80% | 12 | 7 yrs5 owners | Approved |
| Coursera | 26 | 37 | 41% | 6 | — | — |
| Udemy | 16 | 44 | 27% | 5 | 10 yrs4 owners | — |
| MIT OpenCourseWare | 14 | 2 | 88% | 7 | — | Approved |
| Brilliant.org | 12 | 3 | 80% | 6 | — | Approved |
What people said
40 of the 97 comments that mention it, newest first. Each links to the original comment.
“I found the gamification, quizzes, etc. simply distracting.”
“Khan Academy is a gateway for a student to draw the map or scaffold as the initial phase.”
“He however allowed his discoveries to be packaged as a neat capitalist solution”
“It's helped tons of children by virtue of making solid learning material available for free on the internet”
“They complemented school and helped me understand things I'd ignored in class”
“Deriving formulas rather than memorizing them opened up a new perspective for me.”
“it's that I find it incredibly distracting which means I can't focus as easily on the content”
“Khan Academy is a treasure, and is how I re-learned math in my 20s after not taking it seriously in school.”
“Khan Academy is tremendously useful when started at a young age and done consistently”
“It helps build up the problem/solution from the ground up and he goes through each step out loud to help a student understand.”
“the presentation was exceptionally clear, and focused on developing one little piece of a subject at a time”
“Khan Academy is 2010-era state-of-the-art for rote learning and procedural knowledge.”
“I've always struggled with Sal's slow and repetitive speaking style in the videos.”
“it served as an easy-to-digest scaffolding on top of which to build a deeper understanding”
“Quizlet, Khan Academy, Notion, and Gizmo are all great, but each only handles one piece of the puzzle”
“it just feels like you're all over the place and regularly missing skills it expects you to have”
“I'm almost certain I wouldn't have pushed through and gotten a degree without the internet (3b1b and Khan Academy in particular)”
“Deeply admire what Sal Khan set out to do. One of the original pioneers of how technology could transform education.”
“I have found khan academy to be really good for filling any math gaps”
“I think that Khan Academy has a lot of graphics programmers that you might be interested in seeing.”
“Khan Academy exists. Math tutors exist. They don't just exist, they're amazing.”
“He really took the time to replicate the manual teaching process of writing on whiteboard.”
“Having YouTube and Khan Academy and everything else would have made such a huge difference for me.”
“I had no access to anyone who could teach me calculus as a kid except Khan Academy”
“actually having easily digestible 5 min vids like those Khan put out, just wasn't a thing”
“there are Khan Academy, Harvard, MIT,... courses that you can download and use locally”
“It was genuinely new that a student could rewatch something until it clicked”
“it's an excellent way to have some sort of a basic curriculum, especially when self-studying”
“It was a marketing job around a YouTube channel that purported to be a teaching revolution.”
“in practice it's still about the amount of time a pupil does train with the right oversight”
“Khan Academy to me is still just a YouTube channel trying very hard to be something more.”
“help lots of talented kids to progress in the curriculum beyond what's available in physical classrooms”
“Khan Academy was free and used to obtain 99th percentile SAT scores.”
“Khan Academy actually does force feed you enough actual problems to learn some math”
“Oh this is awesome. I think I remember using this guy's stuff for remedial biology”
“you can search Youtube and find a great Khan Academy/3b1b collab explaining it”
“we mostly use them to learn how to type, write, draw, play learning games, Khan Academy”
“They have a lot of interactive lessons in early math, where you drag and drop for counting and grouping.”
“they both found it really helpful to look at Khan Academy / YouTube clips to better understand what I was explaining”
“I've heard of adults going through Khan Academy's math curriculum for fun to refresh their math skills.”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.