36 Before the questionnaire used to collect data from research subjects, the
questionnaire has been tested to determine the validity and reliability of the items of the instrument. The trial of the questionnaire has been conducted on
November at SMAN 2 Bantul, the respondents are 30 people consist of teachers and employees. The questionnaire trial conducted at SMAN 2 Bantul
because that school is the Sekolah Adiwiyata Provinsi. Therefore, it has similar characteristic with SMAN 2 Banguntapan and SMAN 1 Jetis as
Sekolah Peduli Lingkungan. The trial was conducted to measure the validity and reliability of the questionnaire.
1. Validity Test
According to Wiyono 2011: 38 validity of the content indicates the level of how much items of the instruments represent the concept that
is being measured. In this research, the validity of the test is done by correlating the scores of items with a total score of items. The criterians
are as follows: a If r
value
is greater than r
table
r
h
r
t
, the items of the instrument correlate significantly to the total score. Therefore, the item is valid.
b If the r
value
is smaller than r
table
r
h
r
t
, the items of the instrument correlate significantly to the total score. Therefore, the item is
invalid. The validity test of this research used SPSS 23.0 by the method of
bivariate correlation pearson. Validity test results are as follows:
37 a Environmental Awareness Variable
Table 4. Validity Test Results of Environmental Awareness Item Number
Pearson Correlation Interpretation
1 0,246
Invalid 2
0,147 Invalid
3 0,518
Valid 4
0,169 Invalid
5 0,587
Valid 6
0,718 Valid
7 0,255
Invalid 8
0,648 Valid
9 0,489
Valid 10
0,465 Valid
11 0,323
Invalid Source: Data processed
There are 11 items in the instrument. Five of them is invalid because the value of r
value
is smaller than r
table
0,361 0,05 with the amount of data 30. The items that are invalid namely:
1 In your school there is a policy of attention to the surrounding environment, with 0,246 correlation value.
2 There are policies made by school leaders about the environment in your school, with correlation value 0,147.
3 Policies on the environment in your school to appear because of the desire of the parties in their own schools, with correlation
value 0,169. 4 Policies on the environment in your school arise because of the
demand from the Environment Agency, with correlation value 0,255.
38 5 School you realize planned activities related to the environment,
with 0,323 correlation value. b Environmental Involvement Variable
Table 5. Validity Test Results of Environmental Involvement Item Number
Pearson Correlation Interpretation
1 0,402
Valid 2
0,543 Valid
3 0,712
Valid 4
0,737 Valid
5 0,856
Valid 6
0,269 Invalid
7 0,544
Valid 8
0,598 Valid
9 0,475
Valid Source: Data processed
There are 9 items in the instrument. One of them is invalid because the value of r
value
is smaller than r
table
is 0,361 0,05 with the amount of data 30. The invalid item is item number six, i.e.: in your school
there are efforts to achieve the standard by considering the environmental aspect, the correlation value is 0,269.
c Environmental Reporting Variable Table 6. Validity Test Results of Environmental Reporting
Item Number Pearson Correlation
Interpretation 1
0,821 Valid
2 0,895
Valid 3
0,907 Valid
4 0,905
Valid Source: Data processed
There are 4 items in the instrument. The result shows that all of the items are valid.
39 d Environmental Auditing Variable
Table 7. Validity Test Results of Environmental Auditing Item Number
Pearson Correlation Interpretation
1 0,841
Valid 2
0,868 Valid
Source: Data processed There are 2 items in the instrument. The result shows that all of the
items are valid.
2. Reliability Test
