"Printing Like a Pro!" is a free program to help primary-grade students to print legibly. This pre-test post-test study aimed to evaluate the preliminary effectiveness of this program used in a teacher-taught printing club with occupational therapy support. Eleven students in grades 2 and 3 with persistently poor legibility attended the printing club twice-weekly (24 sessions). Handwriting performance, as measured by the Minnesota Handwriting Assessment, improved both meaningfully (=10% change score) and statistically, with improvements in legibility, form and letter size (p < 0.008). Students with the lowest initial scores showed the greatest improvements in handwriting quality and legibility.