A review of the California driver training evaluation study.

Main purposes of the study were (1) Comparison of the effect of training of secondary school students by(a) credentialled secondary school instructors, and (b) by specially prepared commercial school instructors;(2) comparison of standard programs with those enriched by four extra hours of actual driving practice for both secondary and commercial schools and (3) comparison of the costs of training provided by secondary schools with that provided by commercial schools.