Readability of science textbooks in forms 1 and 2

The readability of science textbooks, used by pupils attending Forms 1 and 2 in state schools, was investigated. According to the Flesch Reading Ease formula and the Fry readability graph, This is Science 1 had a mean reading age of 12.7 years (CI= 1.47) and 11.5 years (CI= 1.54) respectively, whereas This is Science 2 had a mean reading age of 12.6 years (d= 1.2) and 11.6 years (CI= 1.70). Seven versions of two close tests were administered to a sample of 316 Form 1 girls from four area schools and 397 Form 2 girls from the same area schools and a Junior Lyceum. Two methods of scoring were used. It was found that the pupils may understand This is Science 1 if teacher's help is available. This is Science 2 was too difficult for pupils of average and below-average ability but within the capabilities of high-ability pupils.peer-reviewe