Educational compact discs or CD-ROM's are appearing more frequently in the classroom. An educational science laboratory safety CD was developed at the University of Lethbridge in 1994. This case study is an evaluation of the U. of L. safety CD to determine how well the disc facilitates independent, student directed learning. The study involved forty four High School students at Matthew Halton Community School in Pincher Creek, Alberta. The students used the CD in Biology and Chemistry classes. The survey included observations, questionnaire, and interviews to solicit student reaction to the disc. Students agreed that the CD was easy to use and that it was well suited for independent learning. They also made suggestions for further improvements. / 1 compact disk ; 4 3/4 in.