Build your Team
Enhancing your data team with ours
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
Emerging Partner of the Year
Alteryx
Partner of the Year
EMEA
Tableau
Community Impact 2024
EMEA ESMB
DataIQ
Data for Good Champion
Finalist
DataIQ
Best Data Academy or Skills Development
Finalist
Alteryx
Partner of the Year
Europe
DataIQ
Data for Good Champion
Champion
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.
Wed 12 Aug 2026 | Hayfaa Yaser Qays Al-Sheikh Hamid
Before You Serve the Dashboard, Prep the Data
Imagine going to a restaurant and ordering a meal.
It arrives beautifully presented. Perfect plating. Looks incredible.
Then you take a bite and realise the ingredients are completely wrong.
Suddenly, the presentation doesn't matter quite as much
Wed 12 Aug 2026 | Amelia Young
Preppin' Data 2024 Week 27 Part 2: More Joins in Tableau Prep Builder
An continuation of joins in Tableau Prep Builder with a Preppin' Data Challenge example.
Wed 12 Aug 2026 | Hayfaa Yaser Qays Al-Sheikh Hamid
Same Formula. Different Answer. Welcome to DAX.
Imagine asking someone the exact same question three times and getting three different answers.
A little suspicious, right?
Welcome to DAX.
When I first started learning DAX in Power BI, I thought calculations would be pretty straightforward
Wed 12 Aug 2026 | Sophie Yeung
Mapping plant density in Central Park in Tableau
Using Tableau's spatial functions to map the plant density in Central Park
Wed 05 Aug 2026 | Sophie Yeung
Connecting to a Fragrance API in Alteryx
How to connect to the Fragella API (fragrance dataset) in Alteryx
Wed 12 Aug 2026 | Mila Kholodiy
How to Survive Data School Client Projects (From Someone on Their Last One)
This week is my last client project, so before I hand in my final workbook, here's everything I wish someone had told me on day one — from why Monday is won or lost on the data, to how to present like it matters and be kind to yourself when the runway gets bumpy
Wed 12 Aug 2026 | Jude Royall
Pareto Chart in Tableau
10% of premier league players made up just over 50% of all PL goals scored last season.
Wed 12 Aug 2026 | Ben Hayward
Tableau Dynamic Zone Visibility
Dynamic Zone Visibility in Tableau allows you to show or hide dashboard elements dynamically based on user interaction, eliminating cluttered containers and complex sheet-swapping hacks
Tue 11 Aug 2026 | Dev Bhatnagar
How can we turn messy spreadsheet data into a relational model? (pt. 2)
Relational databases are the backbone of most systems that need to track structured, interconnected information reliably. E-commerce platforms use them to link customers, orders, and inventory. Banks use them to tie accounts, transactions, and balances together in a way that can't drift out of sync
Sun 09 Aug 2026 | Melissa Osorio
Continuous and discrete dates in Tableau
How to make sense of them
When doing date visualisations in Tableau, it can occur quite frequently that when the date is added on to a graph, there a continuous date line appears when the needed outcome was to compare the different quarters of the data as bars
Tue 11 Aug 2026 | Marcus Rocco
Data Analyst vs. Data Scientist vs. Data Engineer: What’s the Difference?
Data in Modern Business
Data is used across nearly every part of a modern business.
Organizations use it to understand customers, track performance, improve operations, identify opportunities, predict outcomes, and support better decisions.
But simply having data is not enough
Sun 09 Aug 2026 | Nika-Kare Pierre-White
Column vs Measure Calculations in Power BI
In Power BI there are two types of calculations, Columns and Measures. Both are created using Data Analysis Expressions (DAX).
Columns
what are they?
Columns are calculations which are calculated row by row in a table. It produces a new column and is stored within the table
Want to know more?
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