Since this mod uses the active career system, you generally need the The Sims 4: Get to Work expansion pack for it to function properly.
The by Kawaiistacie is a popular addition for The Sims 4 that transforms the standard "rabbit hole" school experience into an active, playable career. Mod – Playable School Events by KAWAIISTACIE
This mod is often used alongside the "Go to School" mod by Zerbu. While they offer similar themes, Kawaiistacie’s version focuses more on the "Event" and "Social" aspects of the school day. Are you having trouble installing the mod, or Since this mod uses the active career system,
Sims can build specific skills while at school based on their classes (e.g., Logic, Writing, or Fitness). Mod – Playable School Events by KAWAIISTACIE