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To assist you further, would you please confirm the name of the field/section that is getting populated by a value of 0 in the Quick lookup? It would be great if you can share a screenshot of the scenario and we recommend removing any private data while sharing.
Does anyone know when quick look up refreshes? Our percentage is correct but when you click for the assignment view of a class one assignment is missing. The bottom says updated 1/21 which makes me think there must be a nightly sync for the assignments to be up to date. I just always assumed it was real time. Thank you!
In over 20 years as a PowerSchool I found it to be always live. If you load a page, it pulls all of the current data. I remember 10 years ago in one of my computer classes, a student was looking at their grades and went back to quick lookup and commented my grade just changed. A teacher across the hall had just literally entered new assignment grades. That being said, I have seen more caching issues the past few years with various PowerSchool products. It could be the individual class detail view page is encountering this issue.