The aim of this research was to find out the effectiveness of gallery walk in
teaching reading comprehension achievement at the tenth grade students of SMK
Muhammadiyah 1 Purwokerto. This research employed Quasi-experimental
method with two different classes, experimental class and control one. Class X
accountancy 1 became the experimental class and class X accountancy 2 became
the control one. The number of each class was 25 students. The instrument used in
this research was test, both pre-test and post-test. The kind of test that was used is
multiple choices combined with true-false. Having calculated the data, the
researcher got the t-test value (3.03898) that was greater than t-table (α = 0.05:
48= 1.6772). This means that, there is a positive effect in teaching reading through
gallery walk.