Development of Valid and Reliable Teacher-Made Tests for Grade 10 Mathematics

Abstract

Tests are tools utilized by the teachers to evaluate their teaching and students’ learning
to improve instruction, curriculum and consequently compute grades. This study hopes to
develop reliable and valid teacher-made tests. Tests for Grade 10 Mathematics in the first and
second grading periods were content and face validated by three (3) experts. The content
validation was done via congruency with the objectives per topic indicated as well as the level of
cognitive domain set for the item in the Table of Specifications (TOS) based on Bloom’s
Taxonomy. Then, the tests underwent item analysis and distractor analysis utilizing the Item
Analyzer software. Results indicated that the tests items were congruent with the set objectives
and levels of cognitive domain. These tests have KR 20 of 0.82 and 0.85 for the first and second
grading periodical examinations, respectively. These were of average level of difficulty and with
reasonable items. The first 38 items were retained, 14 items were revised and 8 items were
rejected. Distractor analysis showed the distractors to be changed while revising an item. Also, it
indicated that the stem be improved when distractors were plausible. The tests were valid and
reliable hence, measure actual performance of the students.