Teachers at School a Were Given a Substance Abuse Knowledge

Multiple Choice

Teachers at School A were given a substance abuse knowledge test. During the next four months, the teachers attended training sessions on substance abuse. They were then given the knowledge test again. Similarly, teachers at School B were given the substance abuse knowledge test, and four months later they were given the test again. What kind of design was used in this research?

A) Pretest-posttest true experimental design
B) Nonequivalent control group pretest-posttest design
C) Interrupted time series design
D) Multiple baseline design