362 a questionnaire for the deputy principals a

This preview shows page 51 - 54 out of 126 pages.

3.6.2 A questionnaire for the Deputy Principals A questionnaire for the deputy principals was similar to that of the principal in that they share the same role of performance appraiser in school under the new system only that they may provide different experiences on TPA.
40 3.6.3 A Questionnaire for the Principals Questionnaire for the principals equally consisted of a section on demographic information, purpose of teacher appraisal, teacher appraisal methods, use of TPA feedback and suggestions on how TPA system can be improved. Like the teachers questionnaire, the principal‟s questionnaire consist ed of closed ended, likert and open ended questions expected to provide quantitative and qualitative data respectively. 3.7 Validity of the Instrument “Validity refers to the extent to which empirical measurement adequately reflect real measurement of the concept under consideration” (Babbie et al, 2001:143). Validity of the study instruments was determined by Dr. George A. Onyango and Dr. Mukirae Njihia from the department of Educational Management Policy and Curriculum Studies, Kenyatta University who are experts in this field of study. They assessed and provided feedback on the corrections which was required. Their input was used to improve ambiguity in questions, biases and wrong wordings. 3.7.1 Piloting Piloting is approved by Kombo and Delno (2006). They observed it supports to know how feasible the study can be. After coming up with research instruments, they were put to test in two schools outside the sampled group. The way piloting was done was similar to the way it was done in the actual study. Weaknesses in relation to validity and reliability were then addressed before the real study was rolled based on the piloting results.
41 3.7.2 Reliability of the Instruments Reliability of a measuring tool is the capacity to give similar results across two or more attempt to measure the target concept (Orodho, 2009). Test and re-test method was used to gauge the consistency of the study questionnaires by administering the teachers questionnaire twice to the same group of teachers and similarly administering to the deputies and principals questionnaire twice to a number of deputies and principals in schools not selected in the sample. The second administering was done after the end of two weeks to find whether the result was the same. Correlation, coefficient of the results from the two tests was calculated using spearman rank correlation formulae. A correlation coefficient alpha of 0.7346 was established for teachers‟ questionnaire, 0.8650 for deputy principals‟ questionnaire and 0.8063 for principals‟ questionnaire. According to Mugenda and Mugenda (1999), a positive coefficient of 0.7 and above confirms reliability of a measuring tool. It can therefore be successfully used to collect data.

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture