<p>They are not focused on everything. That is the point. In Singapore, the children in grades 1 and 2 take Math, English and Native Tongue instruction. That is it, full stop. IN Grade 3 they add Science. Everything else is secondary and may or may not be part of a school program.</p>
<p>When the only things worth teaching are those which can be tested with a test where there is only one right answer, there are going to be necessary limitations in how people learn to think ,what they value as learners and how other considerations- such as social development- are incorporated in learning.</p>