4S0 ILLINOIS STATE ACADEMY OF SCIENCE 



to positions for which they are best suited and in which 

 they find their greatest opportunity for service. The 

 combined practice would also inevitably result in a more 

 exacting appraisal of training materials and methods 

 than has yet been attempted. 



It should be expected that a more complete classifica- 

 tion of school and testing returns on the basis of learn- 

 ing capacity, coupled with corresponding employment 

 returns, would in the end lead to the establishment of a 

 common denominator for vocational education and em- 

 ployment ; a common denominator in terms of capacity, 

 interest, and opportunity which represent the important 

 variables in employment. 



