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Launch HN: Bloomy (YC S26) – AI-powered mastery learning for K-12

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Re: Launch HN: Bloomy (YC S26) – AI-powered mastery learning for K-12

#41

The fastest, most surefire way to nuke your child's brain is to give them a screen. There is certainly room for software to design a curriculum for the parent or teacher to use. We have tried (and failed) to find such a thing for our homeschool curriculum. But giving the kid a screen? If you're even a midge honest with yourself, a screen will de-educate your child, leading to the opposite of the intended consequence.

I empathize with the screen time concerns - the reality is most kids in classrooms are already on screens, which are doing very little to move educational outcomes (from what I can tell based on the NAEP evidence).

And then you also have kids at home who are on TikTok or Instagram reels - combining screen time with easy dopamine.

Some kids using Bloomy decide to use it at home in lieu of social media time. I'd take that as a win. Cheap dopamine erodes focus and mental resilience. Bloomy focuses on ‘effortful dopamine.' We structure the experience so that students generate reward by conquering academic challenges, training the brain to find satisfaction in effort, patience, and mastery rather than passive consumption.

I'd be curious to see data that can isolate the relationship between educational outcomes and small bursts of high-quality instruction delivered via tech. That's one longer-term outcome we're trying to demonstrate. So far our efficacy results (still early pilots, but correlative) appear to be incrementally positive.

Re: Launch HN: Bloomy (YC S26) – AI-powered mastery learning for K-12

#42
post #28

Earlier quoted context omitted.

LLM assisted education =/=> no empathy is taught human-to-human

I have a slightly different perspective based on how I've observed schools use Bloomy. Focused use of Bloomy has allowed teachers to deliver higher-touch support to students who need it most (it also helps that our system identifies common learning patterns so teachers can conduct small-group instruction). Human empathy is not optional, but rather required. Furthermore humans need to make the connection between the a…

(If I'm reading it correctly then "=/=>" means "does not imply", i.e. you and jrflo are agreeing.)

Re: Launch HN: Bloomy (YC S26) – AI-powered mastery learning for K-12

#43

Childhood psychologists are warning about giving Ai to children, very similar to social media and generally screen time. How does this factor into your business?

I just posted something pretty relevant to this in a different comment. Totally agree with the dangers. 2 important points:

1. Not all AI is the same. I see 2 MECE categories in education: AI that does all the thinking/execution for you (the outsourced brain), and AI that is designed to fulfill specific coaching/tutoring roles. If we design AI to ask great questions and find the Socratic thread with students, we can actually make students think harder and learn faster.

2. Social media is full of cheap dopamine. See my comment about 'effortful dopamine' for my perspective on this.

Re: Launch HN: Bloomy (YC S26) – AI-powered mastery learning for K-12

#44
post #28

Earlier quoted context omitted.

LLM assisted education =/=> no empathy is taught human-to-human

I have a slightly different perspective based on how I've observed schools use Bloomy. Focused use of Bloomy has allowed teachers to deliver higher-touch support to students who need it most (it also helps that our system identifies common learning patterns so teachers can conduct small-group instruction). Human empathy is not optional, but rather required. Furthermore humans need to make the connection between the a…

I misread this -- yep I agree with the original statement!

Re: Launch HN: Bloomy (YC S26) – AI-powered mastery learning for K-12

#45
curious how the tutor handles a kid who's confidently wrong. from the description the ladder kicks in at the first sign of struggle, which sounds like it's built to prevent mistakes rather than use them. kapur's productive failure work points the other way, students who commit to a wrong approach and then get shown exactly where it breaks tend to keep the concept. the ones who got steered away before making the mistake don't.

does bloomybot ever just let a wrong approach play out and do the postmortem after? also when a struggling student gets rerouted to an easier skill, can you tell that apart in your data from one who was thirty seconds away from the useful kind of failure? the summit gate tells you they arrived. it doesn't tell you whether the help in the middle did the teaching.

Re: Launch HN: Bloomy (YC S26) – AI-powered mastery learning for K-12

#46

> What evidence or product behavior would you need to trust something like this with a student? I would need the product to not exist. I don't want this anywhere near a child. I want humans instructing humans, teaching empathy, connection, and - most importantly - learning to learn. Anything short of that is just building Brave New World. Electroshock the kids if they reach for forbidden knowledge. I'm sorry to be so…

I appreciate your honesty! I agree that having a talented human teacher for every student would be ideal. Many of our schools just don't have the teacher headcount to deliver meaningful instruction to their students. Some schools (one non-profit in Africa, for instance) have to choose between having no teacher or having Bloomy. Are you putting forward that you'd prefer the former? No judgment if so, just trying to un…

>Some schools have to choose between having no teacher or having Bloomy.

Right. I remember in high school, when I learned about Anki, being amazed by it. I remember thinking, well, we could replace most of the time I'm spending here, so inefficiently, with a few minutes of Anki per day. Wouldn't that be nice!

Took me a while to realize, well, learning isn't exactly the main point of school. If it were, they might invest a little more effort into making sure people actually remember what they learn! (Ebbinghaus isn't exactly cutting edge stuff.)

So I remember thinking, rather cynically, well what we're doing here could be replaced with an app! (For context this was in the 2000s.) Not that I thought education should be just an app, obviously, but rather, my complaint was that what I was getting was strictly inferior to one.

I had hoped that the advent of AI would open up fully personalized learning tracks, but instead what we seem to have gotten is technology being used to surveil children all day (a bit of an unpleasant thing to train them for, no?), and to ensure they are conforming even more tightly to someone else's ideas about how they ought to be spending their time.

To clarify, I think that someone else telling me what I'm supposed to be interested in[0] (with threat of punishment no less) is deeply offensive to the basic fact of being an organism, but how inefficiently it's being done is a second insult on top of the first one.

That being said, I welcome innovation in this space.

---

[0] I later discovered Education On The Dalton Plan in my school library, being apparently the first person in the school's existence to borrow it. The main idea of the book being that if the child directs his/her own learning, they're liable to actually learn something.

My school was a Dalton school, at least ostensibly, but most of the ideas in the book were illegal in my country. (And new laws passed while I was there squeezed it even further!) Turns out what I was after had been tried, over a century ago, but the government decided it was simply too offensive that the average person should be allowed to decide how they're going to spend their time -- at such an early age, no less!

Re: Launch HN: Bloomy (YC S26) – AI-powered mastery learning for K-12

#47
post #45

curious how the tutor handles a kid who's confidently wrong. from the description the ladder kicks in at the first sign of struggle, which sounds like it's built to prevent mistakes rather than use them. kapur's productive failure work points the other way, students who commit to a wrong approach and then get shown exactly where it breaks tend to keep the concept. the ones who got steered away before making the mista…

Good questions. I like that you're digging into the mechanics.

First principle: BloomyBot does not proactively engage the student unless they make 3 mistakes in a row in "Climb" (the practice portion). Then it engages them.

Otherwise, students can engage BloomyBot when they feel they need assistance.

If the student is confidently wrong and attempts to answer a question, they'll see the feedback that they're wrong, with an explanation. They can then clarify with BloomyBot. The goal here is (as you reference) to cultivate productive struggle. So we DO want the student to try their approach.

On getting rerouted to easier skills: students get 1 chance to attempt and fail a Climb. Enough questions wrong in a row (assuming they're trying) = signal that they either aren't ready to learn the skill or that they didn't pay attention to the instructional portion in Base Camp. We give them the benefit of the doubt and assume the latter. If they fail Climb a second time, they get routed to a prerequisite skill.

The Climb gates Summit through Bayesian Knowledge Tracing. Wilson et al. (2019) derived an “85% rule” from formal models of learning: training is most efficient when learners succeed at about 85% of attempts. So Bloomy uses BKT (Corbett & Anderson, 1995) to update each student’s estimated per-skill mastery after every response, and routes students to skills within their Zone of Proximal Development.

Re: Launch HN: Bloomy (YC S26) – AI-powered mastery learning for K-12

#48
I am here to tell you HELL YES and TAKE MY MONEY. I am such a fan of the idea of using AI to help give personalized and structured AI lessons in the hands of students and let them cook!

- It looks like you are gating family access to K-3 for now and I think that's right. I wouldn't really be comfortable giving my first-grader a live chatbot. Maybe I would think about whether there are other non-persona modalities that could still be self-directed (i.e. I am uncomfortable with a chatbot interface on this for a six year old but gamified flash cards with options could be different).

- I think the other issue is with motivation. I have various duct-tape versions of these types of agents and the thing about it is if you're doing the learning right it can be HARD. So I would think about using motivational interviewing or other techniques to help keep the user coming back and motivated.

- I would really think about the assessments here too. Many people are worried about LLMs ruining student evaluations, but if you could bake in reliable, flexible exams that gauge user progress (even for something like a "Did you read this" quiz) I would bet teachers would like it. There is likely so much you could do on student progress observability and e.g. structuring team-based projects or having targeted student working groups to hash out hard concepts in a targeted way, etc.

This is such an interesting market and use case too because the educational system might be very structurally set up to the current pedagogical staffing model (think about the incentives for teacher's unions and administrators). If you think it will be hard to change that system as quickly as you want I would also try to have an offering direct to families / home-schoolers. I think there is also a cottage industry of tutors that might benefit. Maybe partnering with the textbook publishers? I'm sure there are some "Teach your kids better" influencers that would get you into some feeds?

Re: Launch HN: Bloomy (YC S26) – AI-powered mastery learning for K-12

#49
post #40

Earlier quoted context omitted.

A few things: First, every BloomyBot response streams through an inline safety classification, and then an independent second-pass audit sweeps every stored message — a deterministic rule layer merged with a separate LLM classifier, taking the highest-severity result. It flags three categories (crisis, distress, inappropriate) across every language we support, and confirmed flags alert the teacher and school. We also…

Was this comment generated? Your other comments use "--" instead of an em dash... or were all of them generated, but you forgot to replace them with "--" in this one? See: https://news.ycombinator.com/newsguidelines.html > Don't post generated text or AI-edited text. HN is for conversation between humans.

I've been extremely inconsistent in my dashes today as I flip between different devices :)

Re: Launch HN: Bloomy (YC S26) – AI-powered mastery learning for K-12

#50
post #46

Earlier quoted context omitted.

I appreciate your honesty! I agree that having a talented human teacher for every student would be ideal. Many of our schools just don't have the teacher headcount to deliver meaningful instruction to their students. Some schools (one non-profit in Africa, for instance) have to choose between having no teacher or having Bloomy. Are you putting forward that you'd prefer the former? No judgment if so, just trying to un…

>Some schools have to choose between having no teacher or having Bloomy. Right. I remember in high school, when I learned about Anki, being amazed by it. I remember thinking, well, we could replace most of the time I'm spending here, so inefficiently, with a few minutes of Anki per day. Wouldn't that be nice! Took me a while to realize, well, learning isn't exactly the main point of school. If it were, they might inv…

Yes—and the whole hypothesis here is that teaching could be more efficient than it currently is!
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