The game includes a diary system to track current objectives.
Check your desk or computer in the MC's room, as many academic tasks are triggered there. Note that version 0.27.1 fixed a specific "Math book picking up glitch" in the MC's room, suggesting that item-based quests are common in this area. Troubleshooting Common Quest Glitches If you are stuck on a quest in v0.16.1: Seaside Mystery [v0.16.1]
If the paper quest isn't triggering, ensure you have visited the College or Library during the day. The game includes a diary system to track current objectives