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Our consultants come armed with both technical and soft skills to support you to make the most of your data.
The Data School has been paramount to our success at JLL. It has allowed us to bring in highly skilled Tableau and Alteryx consultants. It saves considerable time trying to recruit contractors as I know their skills and training are to the highest standard. Over the past 5 years my team has developed analytical insights which have generated multi million dollar savings of which a considerable amount can be attributed to the Data School consultants we have had working on projects.
Paul Chapman, Global Director of Performance Management, BI and Innovation at JLL
Alteryx
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EMEA
Tableau
Community Impact 2024
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Best Data Academy or Skills Development
Finalist
Alteryx
Partner of the Year
Europe
DataIQ
Data for Good Champion
Champion
Tableau
Data for Good 2021
EMEA
What our consultants are working on
We believe that sharing knowledge and expertise is key to driving innovation and growth in the data community. That's why we're excited to share our latest insights, tutorials, and industry trends with you through this blog.
Written by our team of experienced data consultants, these posts aim to solidify their own learning while giving back to the community.
Tue 04 Nov 2025 | Kib Cheung
Power BI Calculated Columns vs Measures (Made Simple)
Last week was Power BI week — and what a whirlwind! Coming from Tableau, it took time to grasp how Power BI handles data. The biggest challenge? Understanding calculated columns vs measures, and how row and filter context actually work. Here’s how it finally clicked
Tue 04 Nov 2025 | Edward Hayter
The Duck, the Lake and the Warehouse: Data Storage in 2025
The Modern Data Skyline: Storage Options Through a Tour of New York City
In the past, data storage might have conjured up images of a folder full of excel files on a computer or server, or perhaps some tables stored on a server machine in the cupboard
Mon 27 Oct 2025 | Anh Vu
Client Project with Lufthansa as a Project Manager
It was my very first time being a Project Manager and also working with a big client like Lufthansa so I felt doubled stressed when the project start time was near
Fri 31 Oct 2025 | Joseph Hughes
Getting Started in Tableau Next
We recently had our first session in Tableau Next. This blog will outline a brief overview of the material we covered, and can hopefully serve as a useful guide of how to get started.
Step 1: Upload and Prepare Your Data
Start by uploading your data - typically CSV files - into Tableau Next
Tue 14 Oct 2025 | Joss Lazenby
Shadowing: My First Experience at a Client Office
As a part of our consultancy training, I spent time this week with another data schooler at a large telecoms company. During this time, I got valuable exposure to what life will look like after training
Mon 03 Nov 2025 | Anastassia Hitt
Revisiting LOD Expressions in Tableau: My Study Notes before the Exam
As part of my ongoing preparation for the Tableau Data Analyst Certification exam, I’ve been revisiting some of the most powerful features in Tableau, and one of them is Level of Detail (LOD) expressions
Mon 03 Nov 2025 | Anastassia Hitt
Revisiting Tableau Table Calculations: My Study Notes Before the Exam
If you've ever tried to create advanced metrics in Tableau such as percent of total sales, running totals, or year-over-year growth, you've likely encountered Table Calculations. These are among Tableau's most powerful yet highly misunderstood features
Tue 23 Sep 2025 | Anastassia Hitt
Revisiting Tableau Date Functions: My Study Notes Before the Exam
The time has almost come!
It has been an incredible three months at The Data School, and I have learned so many new things that sometimes it is hard to wrap my head around it all
Sun 02 Nov 2025 | Rosh Khan
How to extract the underlying formulas in Excel using Alteryx
I recently worked on a project where I had to collect data from a bunch of Excel files and push it all into an Azure database using Alteryx. Straightforward, right?
Not quite. Some of those Excel files weren’t just holding data — they were full of formulas referencing other Excel files (e.g
Sun 02 Nov 2025 | Joseph Hughes
APIs in Alteryx Designer
What Are APIs?
Application Programming Interfaces (APIs) are sets of rules and protocols which allow different software systems to communicate with each other. In the context of Alteryx, they can be integrated into workflows allowing us to exchange data with apps over the internet
Sun 02 Nov 2025 | Tyler Green
Conditional Formatting and Basic DAX in Power BI
Power BI is a powerful tool for data visualisation and business intelligence. However, despite it's initial intuitiveness and ease-of-use, it's up to you to make your reports insightful, engaging, and actionable. This means going beyond click-and-dragging chart types and simple filtering
Sun 02 Nov 2025 | Joss Lazenby
Tableau Tips: Adding and Utilising a Transparent Colour Palette
Recently, whilst building a monochrome chess dashboard as part of a challenge for our coach at the data school, Lorna, I came across a use case for the transparent hex code in Tableau
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