Question about rankings/tiers

<p>Are schools ranked 1-100 considered tier 1 or is it 1-50 tier 1 and 51-100 tier 2?</p>

<p>I have seen both used before so, I was wondering what the general consensus was.</p>

<p>Generally when people refer to tier 1 as 1-50, and tier 2 as 51-100.</p>