The kids are in the middle of tough mid-term exams. Screech convinces Mr. B. to throw a post-mid-term party for the students but actually it will be a surprise 10th anniversary celebration for him. Ryan, Nicky and Eric get a rude awakening in home economics class--they have to bake a lemon meringue pie for their mid-term grade. The boys buy a pie at the Max and turn it in. They get an ""A"" on it. Screech tastes it and gives them the job of baking a cake, Belding's favorite food, for the big party. Meanwhile Maria blows off studying with Katie and Rachel when Sean Pierce asks her out. Sean asks Maria to help him with his take-home Spanish mid-term. She agrees, despite her study schedule with the other girls. When Maria does study with them, her mind is still on Sean, who calls her up. She leaves to go out with him again. Rachel and Katie think he's using her. The boys plan to raise $150 for a cake, saying it's a gift for Mr. Belding. The girls contribute money, but they want to buy Mr.