In this video, I’m showing you how to use VLOOKUP in Google Sheets to merge data from multiple tabs into one clean, usable sheet. If you’ve ever had one tab with student names (or IDs) and another tab with scores, attendance, or anything else—and you’re tired of copy/paste—this is the workflow that saves you. The whole idea is simple: you pick one “key” piece of information that exists in both places (like a student ID or email), and VLOOKUP uses that to pull the matching info from the other tab. I walk through what VLOOKUP is doing behind the scenes, what each part of the formula means, and how to set it up so your data actually matches correctly. I also talk about the most common “why isn’t this working?” moments—like when the lookup column isn’t the first column in your range, or when your data types don’t match (numbers vs. text). By the end, you’ll be able to merge tabs quickly, keep your sheet updated automatically, and build a more efficient classroom workflow without extra steps.