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<p>Not every IB school offers both the HL and SL options in every subject taught there. For example, in the IB program that my daughter graduated from, Economics was offered only as an SL subject. There were other subjects, as well, that were offered only at one level, such as Biology (HL only), Chemistry (SL only), and Psychology (SL only). Other subjects, such as Physics and Music, were offered at both the Higher and Standard Levels.</p>
<p>Different IB schools structure their programs in different ways. For this reason, it’s hard to generalize from one IB school to another.</p>