To make tutoring sessions more relaxing and fun, I inquired my buddies about their day at school and then absorbed their summaries of a new intriguing book, sympathized with complaints about the tyrant teacher, or advised on how to approach Dad about a lost calculator.
^ it sounds like you're trying to impress your reader with 'complicated' language to make you seem 'smarter'. use simpler language; your essay will sound more natural.
also, you should focus on one or specific events rather than stating broad things. i like how you talked about helping a student who was having a problem at home. that should be the main focus of your essay. or write about something else with more specificity.
i'm actually in the process of writing the extracurricular short answer on the common app too.
i hope this helps =)
Ebtisam Zeynu