<p>How many times can I particiapte in it?</p>
<p>I just glanced over the rules, but it looks like you can enter once a year, every year from grade 9 to 12 (as long as you're under the age of 21)</p>
<p>If you're referring to the ISEF, you can participate every year of high school.</p>
<p>i heard becoming a semi-finalist is all dependent on grades and sat and essay, is that true?</p>
<p>no. My friend was a finalist and she has nto taken the SATs yet.</p>
<p>science fair or STS? I'm pretty sure you can only do the Intel Science Talent Search if you're a senior. I think.</p>
<p>can intl students apply?</p>