Best Place To Build

How did this team from IITM quietly build the world's largest edtech platform? | BP2B S1 Ep. 25

In this explosive episode, we sit down with Professor Andrew Thangaraj from IIT Madras—the mastermind behind NPTEL and the IIT Madras BS Program — who is literally revolutionising how millions of students access world-class education. Professor Andrew Thangaraj reveals: ✅ Shannon's "magic" formula that powers your phone, camera, and every digital device ✅ How NPTEL started BEFORE YouTube and MOOCs even existed (visionary!) ✅ The untold story of how IIT Madras has built something that reaches 980,000 students in a single semester - yes, that’s the number of students taking proctored exams in one semester. But here's where it gets wild - their BS program is producing GATE toppers from students who started with "literally zero background." One student was an AIIMS doctor who realized medicine wasn't for him. Now he's GATE DA Rank 1 through IIT Madras BS program. Professor Andrew explains how they cracked the code on filtering students throughout the program instead of just at the entrance. Controversial? Maybe. Effective? The results speak for themselves. This video is a roadmap to accessing world-class education regardless of your background or JEE rank! 💡 Perfect for: - High school students confused about career options - Parents worried about their child’s future - Anyone who thinks quality education is only for the privileged - Students looking for alternatives to traditional engineering WATCH NOW and discover how education is being democratised in India! CHAPTERS: 00:00 Introduction & Meet the Professor Revolutionising Education 01:40 Prof. Andrew's Research & Teaching Areas: Information Theory 03:19 Key Concepts in Information Theory: Source & Channel Coding 05:35 What is Electrical Engineering? 07:44 Electrical Engineering Specialisations at IIT Madras 08:00 Truth About IIT Difficulty - Professor's Honest Take 12:17 Is Electrical Engineering at IIT Madras Hard? 14:58 The Genesis of NPTEL: Democratising Higher Education 16:33 NPTEL's Evolution: Introducing Certification and Proctored Exams 18:25 Why add Proctored Exams? 22:37 SWAYAM and Credit Transfer: Mainstreaming Online Learning 26:00 Why Brilliant Students Miss Out on IIT - The JEE Problem 30:28 IITM Making Education Accessible - BS Degree Program 34:58 The Structure of the IIT Madras BS Degree Program 35:00 Foundation → Diploma → Degree - The New Model Explained 37:00 Skills First, Theory Later - Why This Program is Different 39:42 Affordability, Impact, and Quality of the BS Program 42:00 From Ordinary Backgrounds to Extraordinary Careers - Real Impact Stories 47:37 Future Programs and IIT Madras's Unique Position 52:01 Engineering Physics vs. Electrical Engineering BTech 54:10 Prof. Andrew's IIT Madras Student Experience (1994-1998) 56:06 The Centre for Outreach and Digital Education (CODE)- Beyond BS Degrees 57:48 Clarifying BS vs. BSc Degrees 58:22 That’s a Wrap! REFERENCES: National Programme on Technology Enhanced Learning (NPTEL)- https://nptel.ac.in/ Swayam Program- https://swayam.gov.in/ Center for Outreach and Digital Education (CODE)- https://code.iitm.ac.in/ IIT Madras BS Degree Programs- https://www.iitm.ac.in/academics/study-at-iitm/non-campus-bs-programmes

ATAndrew Thangarajguest

Jun 20, 2025·59m·Watch on YouTube ↗

📖 CHAPTERS

1. 1

   Meet Prof. Andrew Thangaraj & IIT Madras’s outreach mission

   The host introduces Prof. Andrew Thangaraj (IIT Madras Electrical Engineering) and sets the frame: a mix of core EE concepts and how IITM scaled education through NPTEL, SWAYAM, CODE, and the BS degrees. The conversation previews a shift from “elite access” to “scalable access” without losing rigor.

2. 2

   Information Theory: why Shannon’s ideas changed engineering

   Prof. Andrew explains information theory as the quantification of “information” and the search for fundamental limits in storage and communication. He connects mathematical theory to real-world systems like phones, cameras, and compression—systems that now operate close to Shannon limits.

3. 3

   Source coding vs. channel coding: compression and reliable communication

   The discussion breaks down two central pillars of information theory: compressing data efficiently (source coding) and sending data reliably over noisy channels (channel coding). Prof. Andrew illustrates redundancy in language and bit-flips in communication to make the concepts intuitive.

4. 4

   What electrical engineering really is: controlling ‘the sine wave’

   Prof. Andrew offers an intuitive definition of electrical engineering as understanding, modeling, and controlling sinusoidal behavior in physical systems. He emphasizes the unifying skill: controlling voltage/current through circuits to make devices behave as desired—from motors to phones.

5. 5

   EE vs ECE/EEE & IITM’s specialization landscape

   The host raises confusion around EE vs ECE/EEE, and Prof. Andrew explains the historical split and modern convergence. He frames differences largely by operating regimes (high voltage/current vs low-power systems) and outlines major specialization tracks students pursue at IITM.

6. 6

   Is IIT Madras EE ‘hard’? Faculty culture, abstraction, and Fourier shock

   Prof. Andrew addresses the reputation of EE being difficult, separating past grading strictness from inherent conceptual challenge. He attributes difficulty to heavy abstraction layers (circuits, signals, vectors, bits) and the need to translate between physical reality and math—often crystallized by concepts like Fourier transforms.

7. 7

   NPTEL origins: recording IIT lectures before YouTube and MOOCs

   The conversation pivots to outreach and how NPTEL began around 2000 as a ministry-supported initiative led by early champions. The original model was simple but radical for the time: record IIT classes and make them freely accessible nationwide to improve teaching quality beyond IIT campuses.

8. 8

   NPTEL certification: why proctored exams made MOOCs mainstream in India

   Prof. Andrew explains the shift from free content to credible credentials, driven by learner demand for proof of mastery. IITs chose proctored, center-based exams (not fully online) to build trust and reputation at scale, launching the first flagship course in 2014 and expanding rapidly thereafter.

9. 9

   SWAYAM & credit transfer: building a national MOOC rails system

   The ministry’s SWAYAM initiative expanded the model beyond technology and enabled formal credit transfer. Prof. Andrew describes SWAYAM as the standardized national portal that makes cross-institute credit recognition far easier than one-off MOUs, effectively normalizing online learning in India.

10. 10

    From NPTEL to degrees: why IITM built the BS program

    With operational confidence from NPTEL, IITM saw that many high performers existed outside the JEE pipeline and that curriculum-level learning could be scaled. Prof. Andrew critiques how coaching intensity and cost distort access, then argues for scaling what can be scaled—especially given IITs’ small share of national UG enrollment despite large public funding.

11. 11

    BS program design: ‘filter later’ with Foundation → Diploma → Degree

    Prof. Andrew outlines a deliberately different admissions philosophy: admit a broad pool, then filter through structured stages rather than a single high-stakes entrance. Students enter via a qualifier, progress through a foundation of core courses, then a demanding diploma stage that emphasizes practical skills and projects before the final degree stage.

12. 12

    Skills-first learning at scale: projects, vivas, and remote rigor

    The program prioritizes hands-on capability earlier than typical BTech structures, using project-based assessments and live vivas to maintain integrity. Prof. Andrew explains how online labs and evaluations can scale to thousands while still testing real understanding through supervised changes and deep questioning.

13. 13

    Affordability, inclusion, and redefining ‘quality’ through outcomes

    Fees and fee support are structured to enable participation from low-income learners, with a significant fraction receiving support. Prof. Andrew reframes quality as transformation and employability—taking learners from “zero to job-ready”—rather than only measuring through extreme upfront filtering.

14. 14

    Community effects & credibility signals: GATE ranks and alumni identity

    Despite being largely remote, students form city-based groups and communities, approximating some peer-network benefits of campus life. Prof. Andrew cites strong external validation—top GATE ranks by BS learners, including a notable rank-1 story—and notes that graduates become IITM alumni, with long-term reputation built by outcomes.

15. 15

    What’s next: new degrees, IITM’s advantage, and the broader CODE umbrella

    Prof. Andrew discusses future program possibilities, emphasizing that large-scale degrees make sense where employment demand is broad (e.g., data/AI) and acknowledging the challenges of scaling core engineering. He then explains CODE as the umbrella for IITM’s outward-facing education—executive education, bespoke corporate training, and a web-based MTech—enabled by IITM’s governance and in-house execution model.

16. 16

    Back to campus: Engineering Physics vs EE, student life, and quick BS vs BSc clarity

    The conversation briefly returns to on-campus academics, where Prof. Andrew praises Engineering Physics students and notes curriculum overlap with EE, especially in math readiness. He shares his own IITM student experience (1994–1998) and closes with a practical distinction: BSc is typically three years, BS is four years, with multiple exit options in the BS pathway.