You can view your stats on the left-hand side of the screen.
Smart - Smart represents your intelligence and mana capacity. Increase by studying and wearing certain items from the Magic shop.
Strong - Strong represents your strength and health. Increase by working out in the gym and wearing certain items from the Magic shop.
Cute - This measures how much other characters think that your character is cute. See Guide to Cute Points for how to raise it.
Weird - This measures how much other characters think that your character is strange. See Guide to Weird Points for how to raise it.
Red/Blue/Green/Black/White - These represent your skill with each magic color. See Types_of_magic for more information. Each magic stat can be raised separately through classes or by studying with Minnie Cochran after that option is unlocked (She will always tutor you in your magic stat that is the lowest), or by equipping items from the Magic Shop. Increasing your magic skill by Minnie's training or equipping items does not teach you new spells. You have to attend a class of that color to learn the spells.
Stress - All activities except rest raise Stress. As stress increases, your chances of failure in class, gym, or studying increases. Resting and certain activities at the mall reduce stress.
Merits - Assigned by the professors. You gain Merits by doing well in exams or volunteering for extra work. You gain Demerits for failing exams and general misbehaving. Merits and demerits offset each other, and if your merit score falls to -50 (50 demerits) or worse, you are expelled.
Money - You get $5 every Saturday. Money can be spent at the magic store and certain mall activities. There are events throughout the school year that cost money, and the only other way to earn money is by winning at Logan's Bingo game.