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Absence of conflict of interest.

Citation

Dula, C. (2021). The 2021 net impact and cost-benefit evaluation of Washington state’s workforce development programs. Washington Workforce Training and Education Coordinating Board. [Aerospace Training Programs]

Highlights

Intervention Examined

Aerospace Training Programs

Features of the Study

The study used a difference-in-differences design to examine the impact of aerospace training programs in Washington state on employment, earnings, and public benefits receipt outcomes. Aerospace training programs are workforce development programs that provide science, technology, engineering, and math (STEM)-focused certificates and degrees to individuals seeking high-skilled, high-paying jobs in the aerospace industry.

The author matched aerospace training program participants to similar nonparticipants using propensity scores developed from socio-demographic information. The comparison group members included individuals who registered to use Washington’s WorkSource employment centers and online job-search portals as part of the Wagner-Peyser federal program, but did not participate in the aerospace training programs. The study sample included two cohorts. The 2014-2015 cohort included 3,561 individuals (1,840 intervention and 1,721 comparison) and was predominantly male (87%), White (64%), with an average age of 33. The 2016-2017 cohort included 2,965 individuals (1,530 intervention and 1,435 comparison) and was predominantly male (86%), White (61%), with an average age of 34.  

The primary data sources were administrative data from the aerospace training programs and Washington's WorkSource employment centers and online job-search portals. The author conducted statistical models to examine differences in outcomes between the intervention and comparison groups at one year and three years after program exit. Outcomes included employment rate, quarterly hours worked, hourly wage, quarterly earnings, and quarterly Unemployment Insurance (UI) benefits received.  

Findings

Employment

  • The study found that aerospace training program participants had significantly higher employment rates and more quarterly hours worked than comparison group members at both one year and three years after program exit. 

Earnings and wages

  • The study found that aerospace training program participants had significantly higher hourly wages and higher quarterly earnings than comparison group members at both one year and three years after program exit.  

Public benefits receipt

  • The study found no significant differences in quarterly UI benefits receipt between the groups at one year or three years after program exit.  

Considerations for Interpreting the Findings

The study reports a less stringent statistical significance level, considering p-values of less than 0.10 to be significant, though it is standard practice to consider statistical significance if the p-value is less than 0.05. Only results that demonstrate a p-value of less than 0.05 are considered statistically significant in this profile. 

Causal Evidence Rating

The quality of causal evidence presented in this report is moderate because it was based on a well-implemented nonexperimental design. This means we are somewhat confident that the estimated effects are attributable to aerospace training programs, but other factors might also have contributed. 

Reviewed by CLEAR

April 2024

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