Chapter 313, ", The Cradle Project", is the clearest early answer because it turns Mage Academy's situation into a concrete plot event. The setup is [Mage Academy: Once you have built an academy dedicated to teaching..., but the pressure keeps building through It slightly increases student learning efficiency and faintly....
Chapter 870, "Troublemakers Of The Abyss 4.", is the clearest early answer because it turns Battle Mage Academy's situation into a concrete plot event.
Chapter 723, "Severing Ties.", is the clearest early answer because it turns Royal Mage Academy's situation into a concrete plot event.
Chapter 124, "Academy", is the clearest early answer because it turns Academy's situation into a concrete plot event.
Chapter 234, "Bad News (2).", is the clearest early answer because it turns Mage's situation into a concrete plot event.
Chapter 633, "Calling Out The Teams 2", is the clearest early answer because it turns Mage's situation into a concrete plot event.
Chapter 233, "Bad News.", is the clearest early answer because it turns Mage's situation into a concrete plot event.
Chapter 597, "Unharmed 2", is the clearest early answer because it turns Vajra Academy's situation into a concrete plot event.
Chapter 584, "Line Up", is the clearest early answer because it turns Onyx Academy's situation into a concrete plot event.
Chapter 504, "beginning (4).", is the clearest early answer because it turns Bandit Academy's situation into a concrete plot event.
Chapter 505, "Consequence", is the clearest early answer because it turns Bandit Academy's situation into a concrete plot event.