| http://www.w3.org/ns/prov#value | - ing.Since No Child Left Behind became law in 2002, school systems - under increased pressure to raise student proficiency rates in the core subjects of reading and math - have less money to spend on materials such as paint and clay, and art instructors have less time to teach students what to do with those things, a Sabol study found.Art teachers were put in a very difficult position, says Sab
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