This research paper is mainly intended to find out whether the English textbook used for the second year
students of Elementary school entitled When English Ring’s A Bell for junior high School is compatible or
not with the indicators of good materials design suggested by Rajan. This research applies descriptive
research. In collecting data, the writer did content analysis. The data were analyzed by steps, (1) presenting
the materials (2) comparing the materials (3) judging whether materials of English textbook appropriate
with the indicators of good materials design suggested by Rajan or not (4) drawing conclusions. The result
of the analysis shows that the percentage is 53,80% it means that the materials in the textbook are good or
compatible with the good materials designs suggested by Rajan. This research implies the textbook entitled
“When English Ring’s A Bell” for junior high School is good materials to support the learning process.
Keywords: compatibility, textbook evaluation, good materials design.