diff --git a/src/components/GradesView/EditModal/OverrideTable/AdjustedGradeInput/hooks.js b/src/components/GradesView/EditModal/OverrideTable/AdjustedGradeInput/hooks.js
index da315857..9e3ee891 100644
--- a/src/components/GradesView/EditModal/OverrideTable/AdjustedGradeInput/hooks.js
+++ b/src/components/GradesView/EditModal/OverrideTable/AdjustedGradeInput/hooks.js
@@ -8,13 +8,25 @@ const useAdjustedGradeInputData = () => {
   const hintText = possibleGrade && ` ${getLocalizedSlash()} ${possibleGrade}`;
 
   const onChange = ({ target }) => {
-    setModalState({ adjustedGradeValue: target.value });
+    let adjustedGradeValue;
+    switch (true) {
+      case target.value < 0:
+        adjustedGradeValue = 0;
+        break;
+      case possibleGrade && target.value > possibleGrade:
+        adjustedGradeValue = possibleGrade;
+        break;
+      default:
+        adjustedGradeValue = target.value;
+    }
+    setModalState({ adjustedGradeValue });
   };
 
   return {
     value,
     onChange,
     hintText,
+    possibleGrade,
   };
 };
 
diff --git a/src/components/GradesView/EditModal/OverrideTable/AdjustedGradeInput/index.jsx b/src/components/GradesView/EditModal/OverrideTable/AdjustedGradeInput/index.jsx
index d070b9b5..5c2c4c4c 100644
--- a/src/components/GradesView/EditModal/OverrideTable/AdjustedGradeInput/index.jsx
+++ b/src/components/GradesView/EditModal/OverrideTable/AdjustedGradeInput/index.jsx
@@ -14,12 +14,15 @@ export const AdjustedGradeInput = () => {
     value,
     onChange,
     hintText,
+    possibleGrade,
   } = useAdjustedGradeInputData();
   return (
     <span>
       <Form.Control
-        type="text"
+        type="number"
         name="adjustedGradeValue"
+        min="0"
+        max={possibleGrade || ''}
         value={value}
         onChange={onChange}
       />