Table 8. Blueprint of ISO 9001:2008 Process Approach Interview Toward DSE Implementation Components
NO RESPONDENT
PROCESS APPROACH
COMPONENTS QUESTION
1 Vice principal of
curriculum Management
responsibility Education and training
program 1,2,3,4,5,6,7,8,9,10,
11,12,13 2
Principal Resource
management Human resource
1,2,3,4 Educational
management 5,6,7,8,9,10,11,12,1
3
3 Pokja Prakerin
Internal customer
Students 1,2,3,4,5,6,7,8,9,10
Resource management
Educational management
11,12,13,14,15 Costs
16,17,18,19,20 4
School committee Resource
management Human resource
1,2,3,4,5,6 Educational
management 7,8,9,10,11,12
5 Partner institution
Internal customer
Company as PI DSE 1,15,16,17,18,19,20,
21,22
Resource management
Educational facility 2,3,4
Educational management
5,7,8,9,10 Students
6 Costs
11,12,13,14
Source : Surya Jatmika 2014 with modification
G. Instrument Testing
Instrument testing is done to understand whether the composed instrument is a good instrument for a research. A good instrument should meet two
important requirements which are valid and reliable. If the instrument has been tested its validity and reliability, questions which are appropriate for collecting
data in the research will be detected. Then, instrument which is not valid will be omitted. The instrument testing will be done twice. First, the testing will be
given to students of SMK N 1 Bawang which are not the member of research sample, with 14 students from eleventh grade of accounting program and 5 of
partner institution. Validity and reliability testing in first instrument uses SPSS
program ver. 20. Second, the validity testing uses constructive validity testing about the implementation of DSE or asks experts to give judgment. The test
intended for the principal and head of DSE program at SMK Negeri 2 Bawang. Based on the validity test results against the questionnaire that have been made
instrument was declared valid. 1. Validity test
a. Corrected Item Total Correlation Validity Test validity toward instrument about customer satisfaction in this
research uses corrected item total correlation technique. Each item score and total score are correlated to correlation coefficient score which is
over-estimated. If the value of rcalculation rtable, the statement items in questionnaire have significant correlation concerning the total score
which means that the items are valid. If the value of rcalculation rtable, the items in the table have no significant correlation concerning
the total score which means that the questionnaire items are invalid. In this research, the tool to analyze validity is SPSS software 21. Based on
the internal customer satisfaction questionnaire, there are 14 respondents and for external customer satisfaction questionnaire, there are 5
respondents. It is taken from table r for n=14 in the number of 0,532 and n=5 in the number of 0,878. Therefore, the tested instrument has r
calculate r table so the instrument is considered as valid Sugiyono, 2010: 373.
The calculation result can bee seen in this table below. Table 9. Result of Student Satisfaction Instrument Validity Test on DSE
Program in SMK Negeri 1 Bawang Academic Year of 20142015
Number Table r
Calculate r Explanation
1 0.532
0.626 Valid
2 0.532
0.579 Valid
3 0.532
0.626 Valid
4 0.532
0.540 Valid
5 0.532
0.745 Valid
6 0.532
0.246 Invalid
7 0.532
0.671 Valid
8 0.532
0.645 Valid
9 0.532
0.562 Valid
10 0.532
0.621 Valid
11 0.532
0.820 Valid
12 0.532
0.547 Valid
13 0.532
0.745 Valid
14 0.532
0.328 Invalid
15 0.532
0.676 Valid
16 0.532
0.724 Valid
17 0.532
0.729 Valid
18 0.532
0.591 Valid
19 0.532
0.631 Valid
20 0.532
0.756 Valid
21 0.532
0.534 Valid
22 0.532
0.636 Valid
23 0.532
0.544 Valid
24 0.532
0.676 Valid
25 0.532
0.716 Valid
26 0.532
0.421 Invalid
27 0.532
0.604 Valid
28 0.532
0.542 Valid
29 0.532
0.547 Valid
30 0.532
0.408 Invalid
31 0.532
0.721 Valid
32 0.532
0.646 Valid
33 0.532
0.537 Valid
34 0.532
0.686 Valid
35 0.532
0.677 Valid
36 0.532
0.740 Valid
37 0.532
0.645 Valid
38 0.532
0.662 Valid
39 0.532
0.748 Valid
40 0.532
0.577 Valid
Number Table r
Calculate r Explanation
41 0.532
0.797 Valid
42 0.532
0.540 Valid
43 0.532
0.631 Valid
44 0.532
0.622 Valid
45 0.532
0.850 Valid
46 0.532
0.362 Invalid
47 0.532
0.631 Valid
48 0.532
0.686 Valid
49 0.532
0.631 Valid
50 0.532
0.565 Valid
51 0.532
0.850 Valid
52 0.532
0.716 Valid
53 0.532
0.653 Valid
54 0.532
0.647 Valid
55 0.532
0.546 Valid
In customer satisfaction questionnaire for students, there are 55 statements which consist of 50 valid statements and 5 invalid statements.
Number 6, 14, 26, 30, and 46 are below 0.532 so those numbers are no longer used. The researcher still uses this questionnaire but omitting the
invalid items. It is reasonable because those items are represented by another item.
Table 10. Statement Item Distribution of Student Satisfaction Instrument Validity Test on Each Aspect.
Aspect Item Total
Total valid
Total invalid
Tangible 17
15 2
Reliability 17
16 1
Responsiveness 7
6 1
Assurance 10
9 1
Emphaty 4
4
Table 11. Validity Test Result of Industrial and Business World Satisfaction Instrument on DSE Program in SMK Negeri 1
Bawang Academic Year of 20142015.
Number Table r
Calculate r Explanation
1 0.878
0.956 Valid
2 0.878
0.956 Valid
3 0.878
0.916 Valid
4 0.878
0.928 Valid
5 0.878
0.682 Invalid
6 0.878
0.928 Valid
7 0.878
0.956 Valid
8 0.878
0.742 Invalid
9 0.878
0.916 Valid
10 0.878
0.956 Valid
11 0.878
0.928 Valid
12 0.878
0.916 Valid
13 0.878
0.956 Valid
14 0.878
0.928 Valid
15 0.878
0.916 Valid
16 0.878
0.651 Invalid
17 0.878
0.821 Invalid
18 0.878
0.928 Valid
19 0.878
0.916 Valid
20 0.878
0.928 Valid
21 0.878
0.956 Valid
22 0.878
0.928 Valid
23 0.878
0.561 Invalid
24 0.878
0.928 Valid
25 0.878
0.956 Valid
26 0.878
0.956 Valid
27 0.878
0.916 Valid
28 0.878
0.956 Valid
29 0.878
0.486 Invalid
30 0.878
0.928 Valid
31 0.878
0.928 Valid
32 0.878
0.928 Valid
33 0.878
0.928 Valid
34 0.878
0.956 Valid
35 0.878
0.928 Valid
36 0.878
0.956 Valid
37 0.878
0.916 Valid
38 0.878
0.928 Valid
39 0.878
0.826 Invalid
40 0.878
0.928 Valid
Number Table r
Calculate r Explanation
41 0.878
0.614 Invalid
42 0.878
0.956 Valid
43 0.878
0.956 Valid
44 0.878
0.928 Valid
45 0.878
0.928 Valid
46 0.878
0.956 Valid
47 0.878
0.928 Valid
48 0.878
0.928 Valid
49 0.878
0.916 Valid
50 0.878
0.928 Valid
In the questionnaire result above for industrial and business world, there are 50 statements, 42 valid statements and 8 invalid statements.
Number 5, 8, 16, 17, 23, 29, 39, and 41 are below 0.878 so those numbers cannot be used. The researcher keeps this questionnaire in use
but omitting the invalid statements and it is reasonable because those invalid statements have been acted on behalf of another statement.
Table 12. Statement Item Distribution of Industrial and Business World Satisfaction Instrument Validity Test on Each Aspect
Aspect Item total
Total Valid
Total invalid
Tangible 13
11 2
Reliability 15
12 3
Responsiveness 8
6 2
Assurance 11
10 1
Emphaty 3
3 b. Constructive validity
Instrument constructive validity can be done with conducting validity test by asking expert to give judgment. This validity test is addressed to
measure suitability of grating instruments to outlined in indicators about what is to be measured.
2. Reliability test Reliability test is a testing method to make sure that the level of
questionnaire reliability used in research. Sugiyono 2012:168 states that a reliable instrument is an instrument that generates similar data though it is
used for many times. Reliability on customer satisfaction level instrument in SMK Negeri 1 Bawang is internal customer satisfaction which refers to
student. External customer satisfaction above is industrial and business worlds. Then, this research is computed using Alpha Cronbach method. The
computation of instrument reliability is assisted by SPSS software 21. Reliability of testing result uses measurement result using Cronbach’s Alpha
score result for each aspect. Cronbach Alpha formula is used because the instrument is a questionnaire that contains score.
Table 13. Interpretation of Reliability Coefficient Score
The value of r Interpretation
From 0.800 up to 1.00 Very high
From 0.600 up to 0.800 High
From 0.400 up to 0.600 Moderate
From 0.200 up to 0.400 Low
From 0.000 up to 0.200 Very low no correlation
Source: Riduwan et al 2009: 124 After the instrument reliability is achieved, the result is interpreted based
on the guidance. The instrument is admitted as reliable f it shows more than 0.600. However, the instrument is unreliable if it is below 0.600.
Test result reliability, measurement result with Cronbach’s Alpha score
result to students for customer satisfaction aspect is illustrated in table 14.
Table 14. The Test Result of Student Satisfaction Reliability Toward DSE Program in SMK Negeri 1 Bawang of 20142015 Academic Year.
Reliability Statistics
Cronbachs Alpha N of Items
0.954 55
From the computation above, the result of student satisfaction questionnaire reliability using SPSS Softwar
e 21 with Cronbach’s Alpha is 0.954. It is more than r table 0.532 which means that research questionnaire
used to measure student satisfaction level is categorized as very high. Test result reliability, measurement test using Cronbach’s Alpha score
result with industrial and business world as respondent of customer satisfaction aspect is illustrated in table 15.
Table 15. The result of Industrial and Business World Satisfaction Reliability Toward DSE Program in SMK Negeri 1Bawang
Academic Year 20142015
Reliability Statistics
Cronbachs Alpha N of Items
0.994 50
From the data computation result above using SPSS software 21 with Cronbach’s Alpha method, it is showed that the value of 0.994 is more than
r table 0.878 which means that the research questionnaire to measure student satisfaction level is categorized as very high.
H. Research Procedures
