Correlation One

Data Science for All is the perfect intro to data science boot camp for anyone who has interest in the field but has little knowledge of what it is or what data scientists do! The cases, instructors, and mentors all work together to make the field more accessible by providing you with a foundation for entry. Not to mention the cohort being full or people from all walks of life, industries, and professions at various stages of their careers. Correlation One did an amazing job at creating a community that will stand the tests of time. The courses are completely free and still of outstanding value. You exit the program with an understanding of what you know and don't know that you can use to guide further learning and capitalize on skills that will get you to that data job. You also leave the program with a strong network of like minded individuals and a data science project you can be proud of and add to your portfolio. I can not recommend it enough. If you are thinking of applying, you should!

13 Saturdays, with some Saturdays off
10am -3pm EST for lectures and case studies
3pm-8pm EST for group work Read less

Data Science for All was an amazing experience that I was fortunate enough to participate in. Considering that it was the first cohort to enter the program, the fact that there were only a few problems with the program is a testament to the dedication and forethought that the program leaders have for this endeavor.

NOTE:
Since we were the first cohort, we were the guinea pigs, and we tried different things during the program. Certain aspects might have and will change (for example, they now have a python self-paced mini boot camp before the actual program, as opposed to during the first few weeks of the program), so please refer to the program website and leaders to find the most up-to-date information.

MY BACKGROUND:
I graduated with a math degree in 2017, and I took two intro-to-computer-science and a data structures course. However, I forgot most of what I was taught, and spend most of 2020 trying to relearn everything, with an emphasis in python. It was during this time that I learned about DS4A.

APPLICATION PROCESS
I don't remember the application process that well but what I can say the following:

• The initial application didn't take too long. They're interested in why you want to join the program, and what prior experience/education you have. They also want to know more about your experience as an underrepresented individual.
• The assessment involves a lot of statistical terms that I wasn't used to. However, in context you can understand what the question is asking you and what the different responses mean. A review of statistical terms isn't necessary, but it wouldn't hurt. 
• The interview was a lot shorter than I thought it would be. They go over some of the questions that you answered in the initial application and they let you elaborate more. They check to see if you pass some minor technical requirements you might have (more on this later). They also ask about you're current employment status, and whether you'd be available to consider certain job opportunities that come through the program (note: You don't need to be unemployed or looking for a new job to enter the program. I knew multiple people who had no intention of leaving their job, but rather wanted to upgrade their skillset)

I heard roughly 2-3 weeks later that I had been accepted into the program.

TECHNICAL REQUIREMENTS
The only real technical requirement that we had for the program was that our computer have at least 8gb of ram. This is so they can use a program called Docker, which to put simply, sets up a mini computer within your current computer. You'll be running the software for the program through Docker.
Even if you didn't have 8gb of ram, people were still able to participate, but it just makes troubleshooting a bit hard in the long run.

THE INSTRUCTORS/ADMINISTRATORS (will talk about TA's and Mentors later)
The main instructor for the program is Professor Natesh Pillai, professor of Statistics at Harvard University. However, you'll know him better as DJ Tesh. Natesh is an absolutely wonderful and amazing individuals, and within seconds of hearing him speak, I was able to relax and I knew I was in good hands. Not only is he passionate about data science, but he's also passionate about the mission of DS4A and teaching. He brought a lot of energy and kept everyone engaged and focused. 
Sometimes other individual's would come in to teach certain parts of the program, and I felt really bad for them since they were always compared to the powerhouse that is Natesh. However, they were also great teachers, and tried their best to make sure that they explained everything as clear as possible. 
The rest of of Correlation One crew was also amazing. One thing that surprised me was not only the speed of their response, but also the sincerity they had. They worked with participants to make the program better and were very willing to admit and change mistakes they might have made.

SATURDAY CLASSES AND CASE STUDIES
Classes started at 7am PST, and usually had case studies from 7:10-ish to about 12 pst. Almost everything you'll learn will be through the case studies, which has real world situations. A majority of the case studies do a great job of teaching the concept at hand, and I would refer to them multiple times during the program. During the case study, if you had questions you could ask the presenter directly through the Slack channel or ask your TA's who were on standby to answer questions. Some of the concepts or tools we learned were

• Python
• Pandas
• SQL
• Data Cleaning
• Data visualization
• Hypothesis testing
• and much more!

One thing about the classes, though, was that the pacing was never perfect, and that because the skill level of all the participants varied widely. Some individuals had prior experience with coding, like myself, and so we could follow along well enough. Other with no coding experience struggled a bit during the first couple of cases. However, they are making changes to fix this, such as having a python bootcamp before the actual program. and experimenting with recording the lessons and having TA's go over the recording within their groups. Another Issue was the timing of some concepts. For example, I personally would have liked learning more about the statistical aspects of data science much sooner, since it would have helped with our project. However, I think this is a minor issues that can be easily fixed for future cohorts.
The rest of the day was usually filled with a mixture of another case study, some community event, an invited speaker sharing their experiences, TA meetings, or free time to work on your projects. One thing I'll say was that the speakers they had were amazing, and I think it's safe to say that everyone looked forward to hearing these individuals.

TAS AND MENTORS
Roughly 50 participants will be assigned to a pair of TA's and they're one of the first individuals you'll contact when you have questions or problems regarding the material or your project. They answer questions during the lectures and have office hours on Saturday and during the week to help you out with your studies. From what I heard from friends in different TA groups was that most if not all of the TA's were very helpful and friendly. I can say that my TA's were great, and one TA in particular went above and beyond when our group was having major problems with our project.
The Mentors are individuals who you'll contact roughly once every 2 weeks. They'll mentor you with regards to your project and your future career goals. From my personal experience our mentorship didn't go smoothly, but that more of an error on our part and due to circumstances outside of our control. I heard most mentorships were really great and that people were able to learn a lot from them.

ASSIGNMENTS AND THE PROJECT 
We had 3 assignments we had to turn in for my cohort. You'll get credit and receive you certificate if you at least make an effort to finish it, but in order to receive a certificate with distinction, you'll need to a score of 90(?) or more on at least 2 of the assignments.
These assignments were not easy, and I would highly advise against starting them the night before. However, they're not impossible to do. You might need to do a little extra research in order to answer certain questions or to use certain tools, but it wasn't anything impossible. You're also allowed to work with others (so long as you didn't copy their work word for word), so these assignments usually lead to creating friendships with people who were struggling along with you. 
The project was the most important part of the program, and in my opinion the hardest. You'll be working on it starting the first week or two, and roughly every other week you'll be turning in a certain part of the project. You'll be working with 4 other individuals, and the idea is that the 5 of you together will have all the skills and knowledge necessary to finish this project. The projects aren't graded, per say, but rather they want to see that you applied what you've learned and made an honest attempt to answer a question. 

JOB ASSISTANCE
During and after the program ends, there will be career fairs where a good amount of companies will present a bit about who they are, what they do, and how they're using data science in their organization. They'll share what positions they have available and would be open to questions. One issue multiple people had was that a lot of the organizations at first were looking for either people with a lot of experience or people with masters/PhDs. However, this is more of a problem with the companies that presented and less of a problem with Correlation One. They told us they were actively working to make companies lower or drop their educational requirements where possible and to give DS4A participants a chance, and there has been a notable difference from those first presentations to now. I'm hoping that as knowledge of who DS4A is and what their mission is, that even more opportunities will come.
They also have a platform called C1-connect, where you can share your portfolio and your job preferences, and during certain times of the year they would match companies with you to go through the application process. However, I haven't gone through the whole process yet, so I can't say much about it for now.

SUMMARY
This program is an amazing opportunity to learn about data science and enter the field, despite the few problems it has an especially considering that its free. It isn't easy and requires dedication, but by doing so you'll be better prepared for life after the program. It doesn't teach you everything about the data science field, but I feel that it gave me the head start as well as the tools to continue further in this path. 
I'm glad I applied, and I'm sure you will too. Read less

DS4A Colombia 1.0 was the best learning experience of my life.  Philosophy  Learn by doing and teamwork. You learn much more than Data Science.

• You are in a Team of 5-7 people, balanced and multidisciplinary. Full of diversity and inclusion.
• The team can build an app, presentation, data folio, report, and codebase in a few weeks.
• You help with your strengths.
• Relations with your team survive beyond the training; you build a community and new friends.
• It's a fun program with a lot of open discussion and jokes.
• There are a lot of feelings, including happiness, satisfaction, competition. This program touches our hearts.
• Share job postings.
• Correlation One selects the best of the best to take them in the program, you must get the scholarship to be there, but it is open to anyone.
• It is an intensive and challenging program.
• DS4A certification in Colombia has a lot of value to get a job.
• You practice English listening, writing, speaking, and presenting.
• The best university in Colombia does not have a teacher like Natesh. It is a dream for any student in Colombia to have a Harvard teacher.
• C1 has excellent teachers and TAs. Fellows can ask and interact with them. 
• Content carefully structured to ramp up and reach a clear final goal.  Real problem cases with business context. Feedback and Review from Tas

Today developers positions always request your git repositories to check your projects and contributions.  This program is fantastic to improve your portfolio.  You learn to ask for help, read before asking, contribute, and help others.   Read less

Correlation One-Data Science For All (DS4A) mostly focuses on Python, SQL, statistical analysis, business perspective. You gain a solid understanding of how to approach business problems using data.  The lessons are taught by Prof. Natesh Pillai and the best lessons I ever attended. The community is 500-1000 people that are always helpful. Teaching Assistants help with the assignments and career development. Mentors from the industry help your real-life projects. They organize a 1-week career fair every month. This is a great networking and learning opportunity if you are from an underrepresented group. You need to pass a technical assessment and a behavioral interview to be accepted for this free course.
The course is designed for working professionals. Lessons are 14 weeks, Saturdays from 10 AM to 3 PM EST. Project group work is from 3 PM to 7 PM. 

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My experience with Data Science for All was overall very positive. Professor Natesh alone is a good reason to join the program because he always brings a unique blend of thoughtful, lively, and informative lectures.  The homework could be pretty challenging, but the TAs were always helpful. The group project was a fun and practical way to use the skills we learned from the lectures and the homework. I won't sugar coat how challenging it is to learn data science and python while working a full-time job, but what's nice is that DS4A understands this and is accommodating as long as you communicate with your TAs. Read less

The program was genuinely outstanding and incredibly valuable in building real defensive cybersecurity skills. What impressed me most was the balance between solid theory and practical application. This wasn’t just abstract concepts, we were constantly working through hands-on labs using tools like MITRE ATT&CK, Wireshark, Nmap, RITA, to mention a few. It made the learning experience both challenging and empowering.

As someone who’s neurodivergent, I also deeply appreciated how accessible the Correlation One learning portal is. It’s genuinely friendly to different learning needs and works smoothly with the assistive technologies I rely on. That made a huge difference in my ability to stay engaged and succeed.

The entire team was exceptional—from logistics and operations to support, instructors, and teaching assistants. They were consistently responsive, patient, and thorough. The help I received while preparing for my CompTIA Security+ exam was especially meaningful; every question I had was addressed promptly and clearly.

This program has been a life-changing experience for me. Whether you're entering the cybersecurity field or looking to deepen your knowledge, I highly recommend it. It’s absolutely worth it!  Read less

Joining this 6-month cybersecurity program has been one of the most empowering decisions I’ve made. Coming from the MENA region, I was looking for a learning experience that combined high-quality content, real guidance, and a supportive community — and this program delivered all of that and more.The curriculum was structured in a way that made complex topics clear and practical, and the hands-on labs helped me build genuine confidence in my technical skills. What truly stood out, though, was the continuous support from the instructors and the community. I always felt encouraged, guided, and motivated — whether during the weekly sessions, the assignments, or the exam preparation.Throughout the program, I saw real growth in my technical abilities, problem-solving skills, and self-confidence. This experience didn’t just teach me cybersecurity tools and concepts; it helped me believe in my potential and clarified my career direction.I’m deeply grateful for the effort that went into designing and delivering this program. It’s more than just a course — it’s a community that genuinely wants to see women succeed in tech. I hope my story encourages more women to join, learn, and take their first confident steps into the cybersecurity world.Highly recommended to anyone looking for both knowledge and support on their learning journey. Read less

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My experience with Correlation One has been truly transformative. I highly recommend it to anyone looking to change careers through a bootcamp. The program not only provided me with strong technical skills in data analytics, but also helped me build the confidence to pursue a new career path. The support, structure, and real-world projects have shaped my journey in a meaningful way, and I now feel well-equipped to take on opportunities in the data field. It’s a life-changing experience I’m grateful for.
Cheers and great job  Read less

I would like to express my heartfelt appreciation to Correlation One for teaching me invaluable lessons in data analytics. The course was exceptional, and the dedication of all the staff members truly stood out. I am deeply grateful for their support and professionalism throughout my learning journey.
I confidently refer Correlation One as the best school for data analytics to my friends and relatives, knowing they will receive the same outstanding education and guidance. Thank you for making this experience so impactful and inspiring!
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Data Analytics curriculum offerd by Correlation One was so enticing that I chose it to pursuing for my career path. I found it more elaborative and engaging as I moved along. In Each and every step I walked through I got encouraging team members to work with. Knowledge and Experiences I accumulated during this journey is emitting in me is like a ray of light and I would like to state that I am bestowed!!! Read less

The DS4A Fall 2023 Cohort program was a wonderful opportunity where you can improve on your professional, technical, and presentation skills. The program also provided people the opportunity to connect with mentors who work in different companies. Highly recommend applying! Read less

From beginning to end, my experience was top notch! The courses are expertly led and the TA's are beyond outstanding. I never felt abandoned or lost with no where to turn. The support you receive as a student is beyond anything I've ever experience academically. I can't fine one thing to criticize. Everyone was personable and I was always made to feel like I was the only one and not one of over a thousand. Staff knew me by name and the response time to any inquiry is unmatched! You can tell that the entire organizations focus is solely on your success and that was all i needed. I'm coming back for more next semester. I can't stop wanting to learn!! Read less

C1's admin team and instructors provide the course that use in real work flow process and business data analytics context and also they have a professional training assist and professional development team that assist you to find jobs that match with the training course and experienced. The training is worth for employment life to step forward. Training courses, support and all resources are unlimited to gain "Professional Data Science" dreams come true. Read less

This is overall a scam. You're not going to learn these skills well enough to be employed in 4 months. The best you can do is build a decent resume and probably get a few interviews but you will not get hired. They teach good foundational skills but you should go to an accredited college over this if you really want to learn this field. Read less

 The DS4A has been a truly transformative experience. The knowledge I've acquired is remarkable, and the connections I've made have been invaluable. From understanding fundamental principles to mastering advanced concepts, the impact of this program sets it apart from any ordinary program. I am immensely grateful for this opportunity and its potential to shape my desired career path.  Read less