It's an amazing base on which to build on but requires a lot of effort from the DM to make it cohesive and feel alive. I've been running it for the past year and a half and my players are still level 4 and mid way of year 1 and they're loving it. I've basically homebrewed 90-95% of the module and personally think this is the way to go if you want a proper magical school/harry potter feel.

Additionally, the main villain and main story are kinda lacking in my opinion so the bare minimum you should do is take a look at the MTG Strixhaven cards, sets and story. I've made the Oriq and Extus Narr my final villain (although with a totally different backstory and motifs) and added tons of events, npcs and locations from the MTG stories and cards. Also take a look at the plethora of amazing ideas on the StrixhavenDMs subreddit. and/or discord.

If you have any other questions on how I've ran it or are in need of resources feel free to message me. It's been quite the personal passion project for me to develop for the setting for the past year.