Evidence highlights
Explore the Assessment Efficacy Report to understand more
0.83-0.88
Internal reliability coefficients for mathematical reasoning
0.81-0.84
Internal reliability coefficients for reasoning through language arts
0.75-0.80
Internal reliability coefficients for social studies
Researching GED Testing Service
We assembled evidence from a range of sources to support the validity, reliability, and fairness of the GED Testing Service in assessing high school equivalency in adult learners.
The above findings are Cronbach’s alpha results based on a 2014 study of 1,013 high school students.
Assessment Efficacy Report
A summary of relevant research
Teaching the GED Test
Resources and training to teach the test
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