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close this bookThe Elaboration of School Textbooks - Methodological Guide (UNESCO, 1989, 66 p.)
close this folderThe trial edition
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The trial edition is produced once the final manuscript has been evaluated and revised. So, it is guaranteed, a priori, as relevant teaching material. However, testing in schools can reveal imperfections which have passed unnoticed during evaluation. The following conditions are applicable for testing a trial edition:

- The trial edition is tested in a small number of schools and in classes which correspond to the instructional level of the textbook (four or five schools);

- The schools chosen should be located in different zones (urban and rural or semi-rural);

- Teachers taking part should have good or average qualifications; if qualifications are too low, much of the validity of the testing and evaluation will be lost. Moreover, these teachers should be capable of expressing valid opinions on the experimental textbook and of making pertinent suggestions as to eventual modifications;

- The teachers designated to take part in the experiment should understand the objectives. They should also be aware that their observations and suggestions will be transmitted to the author(s) and to the publisher;

- An evaluator will accompany and supervise the experiment.