This study investigates the application of Krashen's Input Hypothesis, studying the relationship between exposure to the target language and language acquisition within the context of the English-as-a-foreign-language secondary classroom in Spain. The project studied the effect of additional reading instruction with emphasis on reading for pleasure. Series of graded readers were made available to students in the experimental group who were asked to turn in short reports on which they received teacher feedback. An average of 15 hours of after school reading was completed by students in the experimental group. Student achievement was evaluated via the short form of the English Language Skills Assessment (ELSA), a multiple-choice cloze test, a dictation test, the Spew test (vocabulary), and a self-assessment measure. The difference between control and experimental groups was not significant. The following possible explanations are provided: reading does not correlate with greater achievement in a second language; the treatment provides either inadequate or insufficient input to support Krashen's hypothesis; the length of the study was insufficient to show significant results; the measurement tools used were inadequate to capture differences. (SR)