diff --git a/anki/deck.py b/anki/deck.py
index 4e013e397..948d774a4 100644
--- a/anki/deck.py
+++ b/anki/deck.py
@@ -2,9 +2,7 @@
 # Copyright: Damien Elmes <anki@ichi2.net>
 # License: GNU GPL, version 3 or later; http://www.gnu.org/copyleft/gpl.html
 
-import time, os, random, re, stat, simplejson, datetime, copy, itertools
-import operator
-
+import time, os, random, re, stat, simplejson, datetime, copy
 from anki.lang import _, ngettext
 from anki.utils import parseTags, tidyHTML, ids2str, hexifyID, \
      checksum, fieldChecksum, addTags, delTags, stripHTML, intTime, \
@@ -557,24 +555,6 @@ update facts set tags = :t, mod = :n where id = :id""", [fix(row) for row in res
         "A list of all group names."
         return self.db.list("select name from groups order by name")
 
-    def groupsTree(self):
-        return self._groupChildren(self.groups())
-
-    def _groupChildren(self, grps):
-        tree = []
-        for (head, tail) in itertools.groupby([x.split("::", 1) for x in grps],
-                                              key=operator.itemgetter(0)):
-            tail = list(tail)
-            l = [c[1] for c in tail if len(c) > 1]
-            children = self._groupChildren(l)
-            tree.append((head, children))
-        return tuple(tree)
-        for g in grps:
-            names = g.split("::")
-            if g == last:
-                top[-1][1].append(g)
-            pass
-
     def groupId(self, name):
         "Return the id for NAME, creating if necessary."
         id = self.db.scalar("select id from groups where name = ?", name)
diff --git a/anki/sched.py b/anki/sched.py
index 1010fd213..ddf9aad9b 100644
--- a/anki/sched.py
+++ b/anki/sched.py
@@ -2,7 +2,7 @@
 # Copyright: Damien Elmes <anki@ichi2.net>
 # License: GNU GPL, version 3 or later; http://www.gnu.org/copyleft/gpl.html
 
-import time, datetime, simplejson, random
+import time, datetime, simplejson, random, itertools
 from operator import itemgetter
 from heapq import *
 #from anki.cards import Card
@@ -133,6 +133,39 @@ group by gid""", self.today):
                 self.deck.db.execute(
                     "select id, name from groups order by name")]
 
+    def groupCountTree(self):
+        return self._groupChildren(self.groupCounts())
+
+    def _groupChildren(self, grps):
+        tree = []
+        # split strings
+        for g in grps:
+            g[0] = g[0].split("::", 1)
+        # group and recurse
+        def key(grp):
+            return grp[0][0]
+        for (head, tail) in itertools.groupby(grps, key=key):
+            tail = list(tail)
+            rev = 0
+            new = 0
+            children = []
+            for c in tail:
+                if len(c[0]) == 1:
+                    # current node
+                    rev += c[1]
+                    new += c[2]
+                else:
+                    # set new string to tail
+                    c[0] = c[0][1]
+                    children.append(c)
+            children = self._groupChildren(children)
+            # tally up children counts
+            for ch in children:
+                rev += ch[1]
+                new += ch[2]
+            tree.append((head, rev, new, children))
+        return tuple(tree)
+
     # Getting the next card
     ##########################################################################
 
diff --git a/tests/test_deck.py b/tests/test_deck.py
index 064727230..e4cc240a4 100644
--- a/tests/test_deck.py
+++ b/tests/test_deck.py
@@ -177,12 +177,3 @@ def test_selective():
     assert deck.db.scalar("select count() from cards where gid = 3") == 3
     deck.setGroupForTags(["one"], [], 2)
     assert deck.db.scalar("select count() from cards where gid = 2") == 2
-
-def test_groups():
-    d = getEmptyDeck()
-    tree = d._groupChildren(
-        ["a", "b", "c::1", "c::2", "d", "d::1", "d::1::2::3"])
-    assert tree[0] == ("a", tuple())
-    assert tree[1] == ("b", tuple())
-    assert tree[2] == ("c", (("1", tuple()), ("2", tuple())))
-    assert tree[3] == ('d', (('1', (('2', (('3', ()),)),)),))
diff --git a/tests/test_sched.py b/tests/test_sched.py
index be4eec25b..36226a276 100644
--- a/tests/test_sched.py
+++ b/tests/test_sched.py
@@ -592,14 +592,16 @@ def test_collapse():
 
 def test_groupCounts():
     d = getEmptyDeck()
-    # add two facts
+    # add a fact with default group
     f = d.newFact()
     f['Front'] = u"one"
     d.addFact(f)
+    # and one that's a child
     f = d.newFact()
     f['Front'] = u"two"
+    f.gid = d.groupId("Default Group::1")
     d.addFact(f)
-    # make one a review card
+    # make it a review card
     c = f.cards()[0]
     c.queue = 2
     c.due = 0
@@ -607,11 +609,32 @@ def test_groupCounts():
     # add one more with a new group
     f = d.newFact()
     f['Front'] = u"two"
-    f.gid = d.groupId("new")
+    f.gid = d.groupId("foo::bar")
+    d.addFact(f)
+    # and one that's a sibling
+    f = d.newFact()
+    f['Front'] = u"three"
+    f.gid = d.groupId("foo::baz")
     d.addFact(f)
     d.reset()
-    assert d.sched.counts() == (2, 0, 1)
-    assert len(d.groups()) == 2
+    assert d.sched.counts() == (3, 0, 1)
+    assert len(d.groups()) == 4
     cnts = d.sched.groupCounts()
-    assert cnts[0] == ["Default Group", 1, 1]
-    assert cnts[1] == ["new", 0, 1]
+    assert cnts[0] == ["Default Group", 0, 1]
+    assert cnts[1] == ["Default Group::1", 1, 0]
+    assert cnts[2] == ["foo::bar", 0, 1]
+    assert cnts[3] == ["foo::baz", 0, 1]
+    tree = d.sched.groupCountTree()
+    assert tree[0][0] == "Default Group"
+    # sum of child and parent
+    assert tree[0][1] == 1
+    assert tree[0][2] == 1
+    # child count is just review
+    assert tree[0][3][0][0] == "1"
+    assert tree[0][3][0][1] == 1
+    assert tree[0][3][0][2] == 0
+    # event if parent group didn't exist, it should have been created with a
+    # counts summary.
+    assert tree[1][0] == "foo"
+    assert tree[1][1] == 0
+    assert tree[1][2] == 2