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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
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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.
Thu 21 May 2026 | Vivien Lee
Radial Bump Chart in Tableau
Bump charts are quite fun to make. Having only created one during training, I thought it'd be nice to try making a radial bump chart! Here's how it turned out.
I've had Shreya Arya's Mind the Gap dashboard favourited for a while and feel like there's no better time to try to make something like it
Fri 05 Jun 2026 | Helena Reichenvater
KPI Reporting in Power BI
One of the most important tools in presenting your analysis effectively are your KPIs, which provide an overview of your data and the most important takeaways for viewers
Wed 03 Jun 2026 | Shivam Wadhia
SQL: Window Functions
Window Functions allow for the performing of calculations across a set of related rows, while still preserving the original row-level of the input table(s).
Therein lies the main difference between window functions and normal aggregate functions
Thu 21 May 2026 | Holly Andersen
Custom Numbers in Tableau
Custom number formats are a useful way to keep your axes tidy and to have better control over how your numbers appear in Tableau
Wed 03 Jun 2026 | Vaishnavi Shankar
Finding NBA Conference Standings by Region: Lessons from Alteryx and Tableau Prep
Using sports data to calculate rankings and standings is a common analytical challenge, but the techniques can be applied far beyond sport, from political elections to regional performance reporting and league tables
Wed 03 Jun 2026 | Harvey Lloyd-Smith
Connecting to API's via Python
In this blog we will discuss how you can connect to an API via Python and some of the reasons for doing so. API's (Application Programming Interface) are effectively connections between softwares, allowing them to communicate with each other
Wed 03 Jun 2026 | Jorge Sempere
Cleaning up Tableau Prep Flows: Grouping Steps
As I continue to work more and more with Tableau Prep, my workflows are getting messier and harder to follow. What started as simple, linear flows has slowly turned into multiple branches, and repeated cleaning/logic steps
Thu 21 May 2026 | George Rycroft
Using CTEs in SQL to Simplify Complex Queries
Coding in SQL can quickly get overwhelming when dealing with complex queries. CTEs (Common Table Expressions) allow you to simplify these harder queries by breaking them down into smaller, digestible sections
Tue 02 Jun 2026 | Ping HIll
How I Got Into The Data School: Feedback, Iteration, and Initial Dashboard
I’ve just completed my first week at the Data School and have already learned so much. From learning how to speak to stakeholders and research companies, to learning Tableau Prep and Tableau, I know this is just the beginning
Tue 19 May 2026 | Holly Andersen
Getting Started with Bookmarks and Buttons in Power BI
One of the easiest ways to add interactivity to a Power BI report is with bookmarks.
Bookmarks allow you to capture the current state of a report page and return to it later
Tue 02 Jun 2026 | Mila Kholodiy
Navigation Buttons in Tableau vs. Power BI
Navigation buttons play a key role in creating intuitive dashboards. Tableau often uses parameters and calculated fields for dynamic navigation, whereas Power BI relies on built-in buttons and bookmarks, making navigation quicker to implement.
Tue 02 Jun 2026 | Jude Royall
Relationships in a Star Schema
This blog looks at how relationships connect fact and dimension tables within a star schema.
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