Prompt: Stanford students possess intellectual vitality. Reflect on an idea or experience that has been important to your intellectual development.
Every word in the prompt counts.
You need to write about a single idea or experience that contributed to your intellectual development AND that reflects your intellectual vitality. (Look up the word "vitality" right away.)
Contrary to what anyone here tells you, it is perfectly acceptable to write about your AP bio class. However, you will need to rewrite it according to the guidelines I've detailed above.
To summarize, you must describe how this class changed you and, more specifically, how it changed your attitude toward learning.
Don't write about Batman.
The first being your opening sentence.
This is a sentence fragment.