What matters most is how you *explain* the situation in your college application and how you performed *after* the interruption. A strong explanation, coupled with excellent grades and extracurricular activities in subsequent years, will significantly mitigate any negative impact of the gap.
Here's what you should consider:
* Honest and clear explanation: In your application essays or supplemental materials (where applicable), provide a concise and honest explanation of your illness and the resulting need to repeat 9th grade. Focus on the positive aspects – your resilience, your commitment to your education, and your recovery. Avoid overly dramatic language.
* Strong academic performance afterward: Exceptional grades, a rigorous course load, and high standardized test scores in the years following your repeated 9th grade will demonstrate your ability to overcome challenges and succeed academically.
* Extracurricular activities and personal growth: Showcase your involvement in extracurricular activities and any personal growth you experienced during and after your illness. This highlights well-roundedness and character.
* Letters of recommendation: Strong letters of recommendation from teachers and counselors who can attest to your academic abilities and resilience will further support your application.
In short, while the gap will be noted, it's unlikely to be a deal-breaker if you demonstrate significant academic achievement and personal growth following the interruption. Focus on presenting a complete picture of yourself as a student and individual. Consider speaking with your school counselor for advice on navigating this part of your college application process.