A 1981 survey of 45 States revealed shortages of mathematics teachers in 43 States, critical shortages of earth sciences teachers in 33 States, and of physics teachers everywhere.

• 1981年的一个对45个州的调查表明43个州都缺少数学老师，33个州严重缺少地球科学方面的老师，到处都缺少物理老师。