TEACHERS for maths, science and for special and bilingual education have long been hard to find and keep. Filling empty slots in rural and in low-achieving urban districts is not easy either. This is not new, but districts, states and colleges are devising new ways to tackle the problem. Some are allowing unqualified teachers into the classroom. A survey last year of 211 California school districts found that 22% allowed teachers to teach subjects outside their expertise. Others are paying maths and science teachers more, which is anathema to unions, who want to treat all teachers the same. To avoid their wrath, a few states plan to use separate grants to pay bonus salaries, bypassing school districts altogether.
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