**Summary:**
In this creative story, students attend a school with a mysterious vampire teacher, Miss Elsa. The students suspect Miss Elsa of being a vampire due to her peculiar behavior. The students try various methods to prove her vampiric nature, including observing her absence in photos and discovering a bag of fresh flowers. Despite their suspicions, the teacher continues her lessons, occasionally providing assistance to her niece, Sara, during exams. The story ends with the mystery of Miss Elsa's true nature remaining unresolved, leaving the readers intrigued.
Here are the key facts extracted from the text:
1. The main characters are students attending a class taught by Miss Elsa, who is suspected to be a vampire.
2. Miss Elsa's class includes lessons on vampire-related topics and tests on subjects like blood type diets.
3. Rosy is a student who is a fan of vampires and has a notebook with vampire-themed decorations.
4. Alex becomes the new assistant in Miss Elsa's class and brings a unique eraser and a mini wardrobe for capes.
5. Holly Helsing is a student determined to fight vampires and creates a vampire-fighting weapon.
6. Miss Elsa is revealed to be a vampire when she doesn't appear in a photo taken by Megan.
7. Sara discovers Mr. Kosán's skeleton in Miss Elsa's locker and suspects Miss Elsa of being a vampire.
8. Sara receives fresh flowers from a secret admirer and replaces them with wilted ones.
9. The students find answers to a test in the classroom.
These facts summarize the events and key details from the text without including opinions or interpretations.