diff --git a/lang/ja/pgassignment.php b/lang/ja/pgassignment.php
index dc2a72f9c26..39bf7dd0a4b 100644
--- a/lang/ja/pgassignment.php
+++ b/lang/ja/pgassignment.php
@@ -3,16 +3,18 @@
 
 
 $string['absent'] = "欠席";
+$string['acceptance'] = "受領";
 $string['acceptassessment'] = "この評価で満足ですか？";
 $string['acceptedgrades'] = "Accepted grades (\$a)";
 $string['addamendassessmentelements'] = "評価要素の追加/修正";
 $string['afterdeadline'] = "提出日より \$a 日経過";
-$string['allocatedon'] = "Allocated on";
-$string['allocatesubmissions'] = "Allocate submissions to students";
+$string['allgradeshaveamaximumof'] = "全ての評価の最大値は \$a です";
+$string['allocatedon'] = "割り当て";
+$string['allocatesubmissions'] = "学生に課題を割り当てる";
 $string['allocationsincludegoodandbad'] = "Allocations to each student will include at least one good and one poor assignment";
-$string['allowsubmissions'] = "Allow submissions from students";
+$string['allowsubmissions'] = "学生に提出を許可する";
 $string['allthecommentsfor'] = "全てのコメント";
-$string['anonymous'] = "Do peer grading anonymously";
+$string['anonymous'] = "相互評価を匿名で行う";
 $string['assignmentawaitinggrading'] = "Assignment awaiting grading (Deadline is \$a)";
 $string['assignmenthasbeengraded'] = "課題は評価されました";
 $string['averagegrade'] = "平均評価は \$a です";
@@ -22,18 +24,20 @@ $string['calculatefinalgrades'] = "
 $string['calculationofthefinalgrade'] = "最終評価の計算";
 $string['checkallocation'] = "Checking allocation of submissions...";
 $string['commentsby'] = "\$a によるコメント";
+$string['completedon'] = "\$a のコメント";
 $string['deadlineforpeergradingreached'] = "Deadline for peer grading reached";
+$string['deadlineforsubmissionis'] = "提出期限は \$a です";
 $string['deadlineis'] = "提出日は \$a です";
 $string['displayfinalgrades'] = "最終評価を表示する";
-$string['displaygradefromteacher'] = "Display Grade from Teacher";
+$string['displaygradefromteacher'] = "教師の評価を表示する";
 $string['displaygrading'] = "評価を表示する";
 $string['displayoffinalgrades'] = "最終評価の表示";
-$string['displayofgrades'] = "When to Display Grades";
+$string['displayofgrades'] = "評価の表示タイミング";
 $string['doallocation'] = "Do you want to continue with the allocation of assignments to students?";
 $string['dontshowgrades'] = "Only show grades after comments have been agreed";
-$string['editingassessmentelements'] = "Editing Assessment Elements";
-$string['element'] = "Assessment Element";
-$string['elementweight'] = "Element Weight";
+$string['editingassessmentelements'] = "評価要素の編集";
+$string['element'] = "評価要素";
+$string['elementweight'] = "要素比重";
 $string['feedbackgoeshere'] = "Feedback goes here";
 $string['finalgrade'] = "最終評価";
 $string['first'] = "最初";
@@ -44,10 +48,10 @@ $string['gradedawaitingacceptance'] = "Graded, awaiting acceptance (on iteration
 $string['gradedawaitingreply'] = "Graded, awaiting reply (\$a)";
 $string['gradedawaitingreplydeadline'] = "Graded, awaiting reply (Deadline is \$a)";
 $string['gradedby'] = "\$a による評価";
-$string['gradeddate'] = "Grade work by";
+$string['gradeddate'] = "評価期限";
 $string['gradedon'] = "Graded on \$a";
-$string['gradethissubmission'] = "Grade this submission";
-$string['gradethiswork'] = "Grade this work";
+$string['gradethissubmission'] = "この提出物を評価する";
+$string['gradethiswork'] = "この課題を評価する";
 $string['grading'] = "評価";
 $string['gradingaccepted'] = "Grading accepted after \$a interations";
 $string['gradingacceptedon'] = "Grading accepted on";
@@ -55,7 +59,7 @@ $string['gradingby'] = "Grading by \$a";
 $string['gradingdetails'] = "Grading details";
 $string['gradinggiventothissubmission'] = "Grading given to this submission";
 $string['gradingrepliedtoon'] = "Grading replied to on";
-$string['includeself'] = "Include self in list of graders";
+$string['includeself'] = "自分自身を評価者に加える";
 $string['last'] = "最後";
 $string['managingpeerassignment'] = "Managing a Peer Graded Assignment";
 $string['modulename'] = "相互評価課題";
@@ -77,8 +81,8 @@ $string['notyetsubmitted'] = "Not yet submitted";
 $string['numbermarked'] = "Number of assignments graded by the Teacher: \$a";
 $string['numberofallocations'] = "Number of assignments to be assessed by each student: \$a";
 $string['numberofallocationsreduced'] = "Number of assignments to be assessed by each student reduced to: \$a";
-$string['numberofassessmentelements'] = "Number of Assessment Elements";
-$string['numberofassessors'] = "Number of (Student) assessors for each piece of work";
+$string['numberofassessmentelements'] = "評価要素数";
+$string['numberofassessors'] = "各課題に対する評価者(学生)の人数";
 $string['numberofstudents'] = "Number of students enrolled on this course: \$a";
 $string['numberofsubmissions'] = "Number of assignments submitted: \$a";
 $string['peerassessmentsalreadydisabled'] = "Peer assessments already disabled";
@@ -87,6 +91,7 @@ $string['peergrade'] = "
 $string['peergrades'] = "相互評価";
 $string['phase'] = "Phase";
 $string['present'] = "Present";
+$string['previous'] = "前の";
 $string['regradethissubmission'] = "Reassess this submission";
 $string['reply'] = "返答";
 $string['returntosubmissionpage'] = "Return to submission page";
@@ -107,7 +112,7 @@ $string['showgrades'] = "Always show grades with comments";
 $string['showgrading'] = "Show grading";
 $string['showstatus'] = "Show status of the peer grading";
 $string['specimengradingform'] = "Specimen Grading Form";
-$string['submissiondate'] = "Submit work by";
+$string['submissiondate'] = "提出期限";
 $string['submissionsalreadyallowed'] = "Submissions already allowed";
 $string['submissionsawaitinggrading'] = "Submissions awaiting grading (\$a)";
 $string['submissionsawaitingregrading'] = "Submissions awaiting re-grading (\$a)";
@@ -117,9 +122,11 @@ $string['teachersgrade'] = "
 $string['teachersgradeis'] = "教師の評価は \$a です";
 $string['teachersgrades'] = "教師の評価";
 $string['thecurrentgradeis'] = "現在の評価は";
-$string['thegradegiventothissubmissionis'] = "The Grade given to this submission is";
+$string['thegradegiventothissubmissionis'] = "この提出物に対する評価は";
 $string['thegradeis'] = "評価は";
-$string['typeofscale'] = "Type of scale";
+$string['therearegradedpeersubmissions'] = "学生に割り当てられた評価済み課題は \$a あります";
+$string['therearepeersubmissions'] = "学生に割り当てられた課題は \$a あります";
+$string['typeofscale'] = "評価基準";
 $string['warningonamendingelements'] = "WARNING: There are submitted assessments. <BR>Do NOT change the number
  of elements, the scale types or the element weights.";
 $string['weightingofpeer'] = "相互評価の比重";