diff --git a/app/libraries/Educacenso/Register30.php b/app/libraries/Educacenso/Register30.php
index 7655bf464..60f71e609 100644
--- a/app/libraries/Educacenso/Register30.php
+++ b/app/libraries/Educacenso/Register30.php
@@ -104,22 +104,23 @@ private static function getInstructors($instructorsTeachingDatas, $instructors,
     }
 
     private static function getStudents($classroom, $students, $school)
-    {        
-        foreach ($classroom->studentEnrollments as $ienrollment => $enrollment) {
-            if ($enrollment->status == 1 || $enrollment->status == null) {
-                if (!isset($students[$enrollment->student_fk])) {
-                    $enrollment->studentFk->school_inep_id_fk = $school->inep_id;
-                    $enrollment->studentFk->documentsFk->school_inep_id_fk = $school->inep_id;
-                    $students[$enrollment->student_fk]['identification'] = $enrollment->studentFk->attributes;
-                    $students[$enrollment->student_fk]['documents'] = $enrollment->studentFk->documentsFk->attributes;
-                    $students[$enrollment->student_fk]['classroom'] = $classroom->attributes;
-                }
+    {
+        if (count($classroom->instructorTeachingDatas) >= 1) {
+            foreach ($classroom->studentEnrollments as $ienrollment => $enrollment) {
+                if ($enrollment->status == 1 || $enrollment->status == null) {
+                    if (!isset($students[$enrollment->student_fk])) {
+                        $enrollment->studentFk->school_inep_id_fk = $school->inep_id;
+                        $enrollment->studentFk->documentsFk->school_inep_id_fk = $school->inep_id;
+                        $students[$enrollment->student_fk]['identification'] = $enrollment->studentFk->attributes;
+                        $students[$enrollment->student_fk]['documents'] = $enrollment->studentFk->documentsFk->attributes;
+                        $students[$enrollment->student_fk]['classroom'] = $classroom->attributes;
+                    }
 
-                $enrollment->school_inep_id_fk = $school->inep_id;
-                $students[$enrollment->student_fk]['enrollments'][$ienrollment] = $enrollment->attributes;
+                    $enrollment->school_inep_id_fk = $school->inep_id;
+                    $students[$enrollment->student_fk]['enrollments'][$ienrollment] = $enrollment->attributes;
+                }
             }
         }
-
         return $students;
     }
 
@@ -552,7 +553,7 @@ public static function export($year)
                 $managerIdentification['filiation_2'] = '';
             }
 
-            array_push($registers, '30|' . Yii::app()->user->school . '|'.$managerIsAnInstructorId.'||' // 1 a 4
+            array_push($registers, '30|' . Yii::app()->user->school . '|' . $managerIsAnInstructorId . '||' // 1 a 4
                 . $managerIdentification["cpf"] . '|' . $managerIdentification["name"] . '|' . $managerIdentification["birthday_date"] . '|' . $managerIdentification["filiation"] . '|' // 5 a 8
                 . $managerIdentification["filiation_1"] . '|' . $managerIdentification["filiation_2"] . '|' . $managerIdentification["sex"] . '|' . $managerIdentification["color_race"] . '|' // 9 a 12
                 . $managerIdentification["nationality"] . '|' . $managerIdentification["edcenso_nation_fk"] . '|' . $managerIdentification["edcenso_city_fk"] . '|' // 13 a 15