diff --git a/lib/growth/score/arm_circumference.ex b/lib/growth/score/arm_circumference.ex
new file mode 100644
index 0000000..27b5290
--- /dev/null
+++ b/lib/growth/score/arm_circumference.ex
@@ -0,0 +1,5 @@
+defmodule Growth.Score.ArmCircumference do
+  @moduledoc """
+  Calculate z-score for arm circumference for age.
+  """
+end
diff --git a/lib/growth/score/bmi.ex b/lib/growth/score/bmi.ex
new file mode 100644
index 0000000..c5fe2c6
--- /dev/null
+++ b/lib/growth/score/bmi.ex
@@ -0,0 +1,5 @@
+defmodule Growth.Score.BMI do
+  @moduledoc """
+  Calculate z-score for body mass index for age.
+  """
+end
diff --git a/lib/growth/score/head_circumference.ex b/lib/growth/score/head_circumference.ex
new file mode 100644
index 0000000..af7aa36
--- /dev/null
+++ b/lib/growth/score/head_circumference.ex
@@ -0,0 +1,5 @@
+defmodule Growth.Score.HeadCircumference do
+  @moduledoc """
+  Calculate z-score for head circumference for age.
+  """
+end
diff --git a/lib/growth/score/height.ex b/lib/growth/score/height.ex
new file mode 100644
index 0000000..add1c52
--- /dev/null
+++ b/lib/growth/score/height.ex
@@ -0,0 +1,5 @@
+defmodule Growth.Score.Height do
+  @moduledoc """
+  Calculate z-score for height for age.
+  """
+end
diff --git a/lib/growth/score/subscapular_skinfold.ex b/lib/growth/score/subscapular_skinfold.ex
new file mode 100644
index 0000000..4c0daa5
--- /dev/null
+++ b/lib/growth/score/subscapular_skinfold.ex
@@ -0,0 +1,5 @@
+defmodule Growth.Score.SubscapularSkinfold do
+  @moduledoc """
+  Calculate z-score for subscapular skinfold for age.
+  """
+end
diff --git a/lib/growth/score/triceps_skinfold.ex b/lib/growth/score/triceps_skinfold.ex
new file mode 100644
index 0000000..8acb535
--- /dev/null
+++ b/lib/growth/score/triceps_skinfold.ex
@@ -0,0 +1,5 @@
+defmodule Growth.Score.TricepsSkinfold do
+  @moduledoc """
+  Calculate z-score for triceps skinfold for age.
+  """
+end
diff --git a/lib/growth/score/weight.ex b/lib/growth/score/weight.ex
new file mode 100644
index 0000000..6e69f68
--- /dev/null
+++ b/lib/growth/score/weight.ex
@@ -0,0 +1,5 @@
+defmodule Growth.Score.Weight do
+  @moduledoc """
+  Calculate z-score for weight for age.
+  """
+end
diff --git a/lib/growth/score/weight_for_height.ex b/lib/growth/score/weight_for_height.ex
new file mode 100644
index 0000000..27d7afb
--- /dev/null
+++ b/lib/growth/score/weight_for_height.ex
@@ -0,0 +1,5 @@
+defmodule Growth.Score.WeightForHeight do
+  @moduledoc """
+  Calculate z-score for weight for height.
+  """
+end