In order to evaluate the impact of "The Imagineerium" a 10-week educational project, teachers were asked to observe and rate the behaviour of a pilot sample of 135 participating students both at the beginning and at the end of the 10-week period. Scores recorded on the seven-item Trowsdale Index of Teacher Observation of Student Creativity (TITOSC) showed a significant increase between time one and time two. In order to test the reproducibility of these findings the same index was employed a year later in a replication study among 139 students. On this occasion also, scores recorded on the seven-item Trowsdale Index of Teacher Observation of Student Creativity showed a significant increase between time one and time two. These data support the effectiveness of educational experience in enhancing teacher perception of creativity displayed by individual students.