diff --git a/js/CompletionCriteria.js b/js/CompletionCriteria.js
index e7282ef..1bbc56a 100644
--- a/js/CompletionCriteria.js
+++ b/js/CompletionCriteria.js
@@ -4,6 +4,7 @@
 
 export default {
     APPROX_TIME: "approx_time",
+    DETERMINED_BY_RESOURCE: "determined_by_resource",
     MASTERY: "mastery",
     PAGES: "pages",
     REFERENCE: "reference",
@@ -25,7 +26,8 @@ export const SCHEMA = {
         "approx_time",
         "pages",
         "mastery",
-        "reference"
+        "reference",
+        "determined_by_resource"
       ]
     },
     "mastery_criteria": { "$ref": "/schemas/mastery_criteria" }
@@ -86,7 +88,10 @@ export const SCHEMA = {
     {
       "properties": {
         "model": {
-          "const": "reference"
+          "anyOf": [
+            {"const": "reference"},
+            {"const": "determined_by_resource"}
+          ]
         },
         "threshold": {
           "type": "null"
diff --git a/js/package.json b/js/package.json
index 2e6ef86..b630ec9 100644
--- a/js/package.json
+++ b/js/package.json
@@ -27,5 +27,5 @@
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
   },
-  "version": "0.1.41"
+  "version": "0.1.42"
 }
\ No newline at end of file
diff --git a/le_utils/constants/completion_criteria.py b/le_utils/constants/completion_criteria.py
index 230ac28..84c0b5e 100644
--- a/le_utils/constants/completion_criteria.py
+++ b/le_utils/constants/completion_criteria.py
@@ -5,6 +5,7 @@
 # CompletionCriteria
 
 APPROX_TIME = "approx_time"
+DETERMINED_BY_RESOURCE = "determined_by_resource"
 MASTERY = "mastery"
 PAGES = "pages"
 REFERENCE = "reference"
@@ -12,6 +13,7 @@
 
 choices = (
     (APPROX_TIME, "Approx Time"),
+    (DETERMINED_BY_RESOURCE, "Determined By Resource"),
     (MASTERY, "Mastery"),
     (PAGES, "Pages"),
     (REFERENCE, "Reference"),
@@ -20,6 +22,7 @@
 
 COMPLETIONCRITERIALIST = [
     APPROX_TIME,
+    DETERMINED_BY_RESOURCE,
     MASTERY,
     PAGES,
     REFERENCE,
@@ -36,7 +39,14 @@
         "model": {
             "type": "string",
             "$exportConstants": "completion_criteria",
-            "enum": ["time", "approx_time", "pages", "mastery", "reference"],
+            "enum": [
+                "time",
+                "approx_time",
+                "pages",
+                "mastery",
+                "reference",
+                "determined_by_resource",
+            ],
         },
         "mastery_criteria": {"$ref": "/schemas/mastery_criteria"},
     },
@@ -82,7 +92,12 @@
         },
         {
             "properties": {
-                "model": {"const": "reference"},
+                "model": {
+                    "anyOf": [
+                        {"const": "reference"},
+                        {"const": "determined_by_resource"},
+                    ]
+                },
                 "threshold": {"type": "null"},
             },
             "required": [],
diff --git a/setup.py b/setup.py
index a7aea16..7d0247d 100644
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@
 setup(
     name="le-utils",
     packages=find_packages(),
-    version="0.1.41",
+    version="0.1.42",
     description="LE-Utils contains shared constants used in Kolibri, Ricecooker, and Kolibri Studio.",
     long_description=long_description,
     long_description_content_type="text/markdown",
diff --git a/spec/schema-completion_criteria.json b/spec/schema-completion_criteria.json
index de7969b..b6da3cb 100644
--- a/spec/schema-completion_criteria.json
+++ b/spec/schema-completion_criteria.json
@@ -13,7 +13,8 @@
         "approx_time",
         "pages",
         "mastery",
-        "reference"
+        "reference",
+        "determined_by_resource"
       ]
     },
     "mastery_criteria": { "$ref": "/schemas/mastery_criteria" }
@@ -74,7 +75,10 @@
     {
       "properties": {
         "model": {
-          "const": "reference"
+          "anyOf": [
+            {"const": "reference"},
+            {"const": "determined_by_resource"}
+          ]
         },
         "threshold": {
           "type": "null"