At an urban L.A. school, an unexpected oasis

Leo Politi Elementary west of downtown wanted only to make a dreary corner of campus more inviting to its 817 students. Workers ripped out 5,000 square feet of concrete and planted native flora. What happened next was unforeseen. The plants attracted insects, which attracted birds, which attracted students, who, fascinated by the nature unfolding before them, learned so much that their test scores in science rose sixfold. See story
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