Writing official letters is one of the language skills that students in grade VII need
to master. Five aspects that need to be considered in writing official letters are systematic
or parts of official letters, contents of official letters, accuracy of the language of official
letters (selection of words, sentences and paragraphs), spelling and punctuation, and
neatness. In learning to write official letters students are less enthusiastic to think
critically. This makes students feel bored and bored in learning. therefore, learning
models that are appropriate to the material are needed so that they can optimize the
ability of students well. The purpose of this study was to improve the skills to write
official letters using the Student Team Achievement Division (STAD) method in grade
VII students of SMP Negeri 6 Purwokerto. This study uses a class action research design
(CAR) which was carried out in 2 stages, namely the first cycle and second cycle stages.
Cycles I and II consist of planning, action, observation, reflection
The results showed an increase in student skills in writing official letters and
reached the target of a minimum average value specified, which is equal to 75. Based on
these results, the conclusions that can be drawn are an increase in the results of the test
skills in writing official letters and changes in student behavior. VIIB SMP Negeri 6
Purwokerto after participating in the learning process through the STAD method. The
average results obtained at the implementation of prettest is 69.3. In the implementation
of posttest I get an average value of 74.8 and posttest II 81.8.