diff --git a/src/main/java/com/bamdoliro/maru/application/form/ExportFirstRoundResultUseCase.java b/src/main/java/com/bamdoliro/maru/application/form/ExportFirstRoundResultUseCase.java
index d82323c4..b38c3c21 100644
--- a/src/main/java/com/bamdoliro/maru/application/form/ExportFirstRoundResultUseCase.java
+++ b/src/main/java/com/bamdoliro/maru/application/form/ExportFirstRoundResultUseCase.java
@@ -85,7 +85,7 @@ public Resource execute() throws IOException {
             schoolCell.setCellStyle(defaultCellStyle);
 
             Cell schoolCodeCell = row.createCell(10);
-            schoolCodeCell.setCellValue(Integer.parseInt(form.getEducation().getSchool().getCode()));
+            schoolCodeCell.setCellValue(form.getEducation().getSchool().getCode());
             schoolCodeCell.setCellStyle(defaultCellStyle);
 
             Cell subjectGradeScoreCell = row.createCell(11);
diff --git a/src/main/java/com/bamdoliro/maru/application/form/ExportResultUseCase.java b/src/main/java/com/bamdoliro/maru/application/form/ExportResultUseCase.java
index b6b73d70..a0993567 100644
--- a/src/main/java/com/bamdoliro/maru/application/form/ExportResultUseCase.java
+++ b/src/main/java/com/bamdoliro/maru/application/form/ExportResultUseCase.java
@@ -77,7 +77,7 @@ public Resource execute() throws IOException {
             schoolCell.setCellStyle(defaultCellStyle);
 
             Cell schoolCodeCell = row.createCell(10);
-            schoolCodeCell.setCellValue(Integer.parseInt(form.getEducation().getSchool().getCode()));
+            schoolCodeCell.setCellValue(form.getEducation().getSchool().getCode());
             schoolCodeCell.setCellStyle(defaultCellStyle);
 
             Cell subjectGradeScoreCell = row.createCell(11);
diff --git a/src/main/java/com/bamdoliro/maru/application/form/ExportSecondRoundResultUseCase.java b/src/main/java/com/bamdoliro/maru/application/form/ExportSecondRoundResultUseCase.java
index eaaa6d43..b87e9858 100644
--- a/src/main/java/com/bamdoliro/maru/application/form/ExportSecondRoundResultUseCase.java
+++ b/src/main/java/com/bamdoliro/maru/application/form/ExportSecondRoundResultUseCase.java
@@ -82,7 +82,7 @@ public Resource execute() throws IOException {
             schoolCell.setCellStyle(defaultCellStyle);
 
             Cell schoolCodeCell = row.createCell(9);
-            schoolCodeCell.setCellValue(Integer.parseInt(form.getEducation().getSchool().getCode()));
+            schoolCodeCell.setCellValue(form.getEducation().getSchool().getCode());
             schoolCodeCell.setCellStyle(defaultCellStyle);
 
             Cell subjectGradeScoreCell = row.createCell(10);