How Soils Exam Passing Scores are Calculated


Passing Score
The minimum passing score is calculated using a criterion-referenced procedure called the Angoff Method. Experts in soil science review each of the exam questions and evaluate them according to how successful a minimally competent candidate would be in answering each question. This process statistically maintains a passing score from year to year that is independent of each candidate’s level of expertise, i.e., the candidate’s score is not compared to the scores of other candidates taking the same exam.