Demo accounts (password: admin123)
👑 superadmin  |  🎓 alex_k (Gr.5)  |  📚 priya_m (Gr.3)  |  🔢 rahul_v (Gr.7)
⭐ Class 5+ unlocks Fractions!
🔢 ➕ ➖ ✖️ ➗ 🍕