BetterLesson was a two-sided marketplace before most people were using that vocabulary — connecting teachers with professional development resources. The marketplace growth dynamics were the same as any two-sided platform: supply quality, demand acquisition, and liquidity.
What struck me about Alex then, and still does, is that he started from a real problem he had personally experienced rather than a market opportunity he had identified from the outside. That distinction matters more than most founders give it credit for. The ed-tech graveyard is full of products built by people who thought they understood education without having lived inside a classroom.
What BetterLesson got right early
The lesson that stuck: product-market fit in a marketplace has two dimensions, not one. You need fit on the supply side and fit on the demand side. Getting one without the other is not fit — it is a partially assembled product.
Alex's answer was to bypass the institutional sales motion entirely and go direct to teachers. Build something teachers would adopt on their own, prove value at the classroom level, then work up from there. Teachers share things that work. If the product was genuinely useful, word of mouth inside a school building could move faster than any top-down procurement process.
I have thought about that approach many times since in other contexts - at HouseAccount trying to reach homeowners directly rather than through contractor networks, at Arkadium thinking about organic player acquisition versus licensed distribution. The instinct to go where the actual user is, rather than where the institutional buyer is, is usually correct even when it is slower.
The content marketplace model also reinforced the paid acquisition trap pattern I have seen in every marketplace engagement since: acquisition spend that does not produce behavioral retention is not building a business. It is renting one.
The challenge BetterLesson ran into is one I recognize from marketplace work: when you open a platform to user-generated content, you get volume quickly and quality unevenly. 12,000 lesson resources sounds like traction. Some portion are excellent. Some are mediocre. The teacher who needs a good geometry lesson at 10pm cannot tell the difference until she has already wasted time on the bad ones.
This is the curation problem that every content marketplace faces. Etsy faces it. App stores face it. Teacher resource platforms face it acutely because the stakes are higher - a bad lesson plan wastes a teacher's time and, downstream, students' learning time. Alex eventually built quality signals and curation mechanisms into BetterLesson as it evolved. That move - from open platform to curated resource - is the right direction but requires editorial judgment that is hard to scale cheaply.
What BetterLesson became
BetterLesson eventually pivoted toward professional development for teachers and school districts - a more sustainable model than marketplace economics at the K-12 level, where the buyer (the district) and the user (the teacher) are different people with different incentives. The professional development model lets you charge a district for something they value institutionally - teacher training, instructional coaching - while still delivering value directly to the people in classrooms.
It is a harder sell and a longer sales cycle, but the unit economics work in a way that ad-supported or freemium models rarely do in education. Alex and the team figured that out through iteration rather than from a standing start with a clear model. That is how most real companies find their footing.
