automated-grading
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The Octopus That Ate the Edtech Stack
Kira began by teaching computer science. Then it noticed the harder problem: teachers were doing unpaid integration work between a small republic of apps. Its answer is one purple, many-armed system - and Tennessee has supplied the first serious test.
Edexia
Edexia is a Brisbane-founded, Y Combinator-backed (W25) AI teaching assistant that grades essays and written work in each teacher's own marking style. Built for secondary English across IB, VCE, HSC, QCE and WACE curricula, it learns from teacher corrections to deliver consistent, rubric-aligned feedback, cutting marking time while keeping educators in control of every comment before it reaches a student.
Darsel
Darsel is an education-technology nonprofit that teaches K-12 math over the messaging apps students already have. Instead of an app or a laptop, students practice curriculum-aligned questions through SMS, WhatsApp, and Facebook Messenger, and an AI-powered chatbot delivers hints, explanations, and personalized practice while auto-grading homework and reporting progress to teachers. Founded by Stanford MBA and MIT alum Abdulhamid Haidar during the COVID-19 lockdowns, Darsel has grown from a spring-break prototype to a platform used across Jordan, India, and Nigeria, reaching hundreds of thousands of students who have answered hundreds of millions of math questions.