diff --git a/.gitignore b/.gitignore
index 2db1c24b3..c0823ccc7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -202,6 +202,9 @@ test_quad_irreg_interp
 test_quad_reg_interp
 test_table_read
 test_ran_unif
+test_gamma_dist
+test_normal_dist
+test_beta_dist
 test_kde_dist
 test_window
 
diff --git a/assimilation_code/modules/assimilation/beta_distribution_mod.f90 b/assimilation_code/modules/assimilation/beta_distribution_mod.f90
index eec0a327c..f5c3c5fc3 100644
--- a/assimilation_code/modules/assimilation/beta_distribution_mod.f90
+++ b/assimilation_code/modules/assimilation/beta_distribution_mod.f90
@@ -65,6 +65,12 @@ subroutine test_beta
    cdf_diff(i) = beta_cdf(mx(i), malpha(i), mbeta(i), 0.0_r8, 1.0_r8) - mcdf(i)
    write(*, *) i, pdf_diff(i), cdf_diff(i)
 end do
+if(abs(maxval(pdf_diff)) < 1e-15_r8 .and. abs(maxval(cdf_diff)) < 1e-15_r8) then
+   write(*, *) 'Matlab Comparison Tests: PASS'
+else
+   write(*, *) 'Matlab Comparison Tests: FAIL'
+endif
+
 
 ! Test many x values for cdf and inverse cdf for a single set of alpha and beta
 alpha = 5.0_r8
@@ -83,6 +89,13 @@ subroutine test_beta
 write(*, *) 'max difference in inversion is ', max_diff
 write(*, *) 'max difference should be less than 1e-14'
 
+if(max_diff < 1e-14_r8) then
+   write(*, *) 'Inversion Tests: PASS'
+else
+   write(*, *) 'Inversion Tests: FAIL'
+endif
+
+
 end subroutine test_beta
 
 !-----------------------------------------------------------------------
diff --git a/assimilation_code/modules/assimilation/gamma_distribution_mod.f90 b/assimilation_code/modules/assimilation/gamma_distribution_mod.f90
index 953c90fe1..5ffb66d2d 100644
--- a/assimilation_code/modules/assimilation/gamma_distribution_mod.f90
+++ b/assimilation_code/modules/assimilation/gamma_distribution_mod.f90
@@ -65,6 +65,12 @@ subroutine test_gamma
    write(*, *) i, pdf_diff(i), cdf_diff(i)
 end do
 
+if(abs(maxval(pdf_diff)) < 1e-15_r8 .and. abs(maxval(cdf_diff)) < 1e-15_r8) then
+   write(*, *) 'Matlab Comparison Tests: PASS'
+else
+   write(*, *) 'Matlab Compariosn Tests: FAIL'
+endif
+
 ! Input a mean and variance
 mean = 10.0_r8
 sd = 1.0_r8
@@ -87,6 +93,13 @@ subroutine test_gamma
 write(*, *) 'max difference in inversion is ', max_diff
 write(*, *) 'max difference should be less than 1e-11'
 
+if(max_diff < 1e-11_r8) then
+   write(*, *) 'Inversion Tests: PASS'
+else
+   write(*, *) 'Inversion Tests: FAIL'
+endif
+
+
 end subroutine test_gamma
 
 !-----------------------------------------------------------------------
diff --git a/assimilation_code/modules/assimilation/normal_distribution_mod.f90 b/assimilation_code/modules/assimilation/normal_distribution_mod.f90
index b3a7c3329..b6b84a4ba 100644
--- a/assimilation_code/modules/assimilation/normal_distribution_mod.f90
+++ b/assimilation_code/modules/assimilation/normal_distribution_mod.f90
@@ -66,10 +66,10 @@ subroutine test_normal
    cdf_diff(i) = normal_cdf(mx(i), mmean(i), msd(i)) - mcdf(i)
 end do
 max_matlab_diff = maxval(abs(cdf_diff))
-if(max_matlab_diff > 1.0e-15_r8) then
-   write(*, *) 'WARNING: Difference from Matlab baseline is too large ', max_matlab_diff
+if(max_matlab_diff < 1.0e-15_r8) then
+   write(*, *) 'Matlab Comparison Tests: PASS ', max_matlab_diff
 else
-   write(*, *) 'Agreement with Matlab baseline is okay: max diff is < 1e-15 ', max_matlab_diff
+   write(*, *) 'Matlab Comparison Tests: FAIL ', max_matlab_diff
 endif
 
 ! Keep track of differences as function of quantile
@@ -92,10 +92,10 @@ subroutine test_normal
 
 do j = 1, 16
    if(max_diff(j) > inv_diff_bound(j)) then
-      write(*, *) 'WARNING: Max inversion diff ', max_diff(j), ' > bound ', inv_diff_bound(j), &
+     write(*, *) 'FAIL: Max inversion diff ', max_diff(j), ' > bound ', inv_diff_bound(j), &
         'for quantiles < ', max_q(j)
    else
-      write(*, *) 'Max inversion diff ', max_diff(j), ' OK, bound ', inv_diff_bound(j), &
+     write(*, *) 'PASS: Max inversion diff ', max_diff(j), ' < bound ', inv_diff_bound(j), &
         'for quantiles < ', max_q(j)
    endif
 end do
diff --git a/developer_tests/beta_dist/test_beta_dist.f90 b/developer_tests/beta_dist/test_beta_dist.f90
new file mode 100644
index 000000000..2432d9817
--- /dev/null
+++ b/developer_tests/beta_dist/test_beta_dist.f90
@@ -0,0 +1,16 @@
+! DART software - Copyright UCAR. This open source software is provided
+! by UCAR, "as is", without charge, subject to all terms of use at
+! http://www.image.ucar.edu/DAReS/DART/DART_download
+
+program test_beta_distribution
+
+use  utilities_mod, only : initialize_utilities, finalize_utilities
+use beta_distribution_mod, only : test_beta
+
+implicit none
+
+call initialize_utilities()
+call test_beta()
+call finalize_utilities()
+
+end program test_beta_distribution
diff --git a/developer_tests/beta_dist/work/input.nml b/developer_tests/beta_dist/work/input.nml
new file mode 100644
index 000000000..83525855e
--- /dev/null
+++ b/developer_tests/beta_dist/work/input.nml
@@ -0,0 +1,13 @@
+&utilities_nml
+   module_details = .false.
+   /
+
+&preprocess_nml
+   input_obs_qty_mod_file  = '../../../assimilation_code/modules/observations/DEFAULT_obs_kind_mod.F90'
+   output_obs_qty_mod_file = '../../../assimilation_code/modules/observations/obs_kind_mod.f90'
+   input_obs_def_mod_file  = '../../../observations/forward_operators/DEFAULT_obs_def_mod.F90'
+   output_obs_def_mod_file = '../../../observations/forward_operators/obs_def_mod.f90'
+   obs_type_files          = '../../../observations/forward_operators/obs_def_gps_mod.f90'
+   quantity_files          = '../../../assimilation_code/modules/observations/default_quantities_mod.f90'
+   / 
+
diff --git a/developer_tests/beta_dist/work/quickbuild.sh b/developer_tests/beta_dist/work/quickbuild.sh
new file mode 100755
index 000000000..bc7f67a31
--- /dev/null
+++ b/developer_tests/beta_dist/work/quickbuild.sh
@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+
+# DART software - Copyright UCAR. This open source software is provided
+# by UCAR, "as is", without charge, subject to all terms of use at
+# http://www.image.ucar.edu/DAReS/DART/DART_download
+
+main() {
+
+
+export DART=$(git rev-parse --show-toplevel)
+source "$DART"/build_templates/buildfunctions.sh
+
+MODEL="none"
+EXTRA="$DART"/models/template/threed_model_mod.f90
+dev_test=1
+LOCATION="threed_sphere"
+TEST="beta_dist"
+
+serial_programs=(
+test_beta_dist
+)
+
+# quickbuild arguments
+arguments "$@"
+
+# clean the directory
+\rm -f -- *.o *.mod Makefile .cppdefs
+
+# build and run preprocess before making any other DART executables
+buildpreprocess
+
+# build DART
+buildit
+
+# clean up
+\rm -f -- *.o *.mod
+
+}
+
+main "$@"
diff --git a/developer_tests/gamma_dist/test_gamma_dist.f90 b/developer_tests/gamma_dist/test_gamma_dist.f90
new file mode 100644
index 000000000..5a6b701ff
--- /dev/null
+++ b/developer_tests/gamma_dist/test_gamma_dist.f90
@@ -0,0 +1,16 @@
+! DART software - Copyright UCAR. This open source software is provided
+! by UCAR, "as is", without charge, subject to all terms of use at
+! http://www.image.ucar.edu/DAReS/DART/DART_download
+
+program test_gamma_distribution
+
+use  utilities_mod, only : initialize_utilities, finalize_utilities
+use gamma_distribution_mod, only : test_gamma
+
+implicit none
+
+call initialize_utilities()
+call test_gamma()
+call finalize_utilities()
+
+end program test_gamma_distribution
diff --git a/developer_tests/gamma_dist/work/input.nml b/developer_tests/gamma_dist/work/input.nml
new file mode 100644
index 000000000..83525855e
--- /dev/null
+++ b/developer_tests/gamma_dist/work/input.nml
@@ -0,0 +1,13 @@
+&utilities_nml
+   module_details = .false.
+   /
+
+&preprocess_nml
+   input_obs_qty_mod_file  = '../../../assimilation_code/modules/observations/DEFAULT_obs_kind_mod.F90'
+   output_obs_qty_mod_file = '../../../assimilation_code/modules/observations/obs_kind_mod.f90'
+   input_obs_def_mod_file  = '../../../observations/forward_operators/DEFAULT_obs_def_mod.F90'
+   output_obs_def_mod_file = '../../../observations/forward_operators/obs_def_mod.f90'
+   obs_type_files          = '../../../observations/forward_operators/obs_def_gps_mod.f90'
+   quantity_files          = '../../../assimilation_code/modules/observations/default_quantities_mod.f90'
+   / 
+
diff --git a/developer_tests/gamma_dist/work/quickbuild.sh b/developer_tests/gamma_dist/work/quickbuild.sh
new file mode 100755
index 000000000..2d773835a
--- /dev/null
+++ b/developer_tests/gamma_dist/work/quickbuild.sh
@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+
+# DART software - Copyright UCAR. This open source software is provided
+# by UCAR, "as is", without charge, subject to all terms of use at
+# http://www.image.ucar.edu/DAReS/DART/DART_download
+
+main() {
+
+
+export DART=$(git rev-parse --show-toplevel)
+source "$DART"/build_templates/buildfunctions.sh
+
+MODEL="none"
+EXTRA="$DART"/models/template/threed_model_mod.f90
+dev_test=1
+LOCATION="threed_sphere"
+TEST="gamma_dist"
+
+serial_programs=(
+test_gamma_dist
+)
+
+# quickbuild arguments
+arguments "$@"
+
+# clean the directory
+\rm -f -- *.o *.mod Makefile .cppdefs
+
+# build and run preprocess before making any other DART executables
+buildpreprocess
+
+# build DART
+buildit
+
+# clean up
+\rm -f -- *.o *.mod
+
+}
+
+main "$@"
diff --git a/developer_tests/normal_dist/test_normal_dist.f90 b/developer_tests/normal_dist/test_normal_dist.f90
new file mode 100644
index 000000000..5d829e7a2
--- /dev/null
+++ b/developer_tests/normal_dist/test_normal_dist.f90
@@ -0,0 +1,16 @@
+! DART software - Copyright UCAR. This open source software is provided
+! by UCAR, "as is", without charge, subject to all terms of use at
+! http://www.image.ucar.edu/DAReS/DART/DART_download
+
+program test_normal_distribution
+
+use  utilities_mod, only : initialize_utilities, finalize_utilities
+use normal_distribution_mod, only : test_normal
+
+implicit none
+
+call initialize_utilities()
+call test_normal()
+call finalize_utilities()
+
+end program test_normal_distribution
diff --git a/developer_tests/normal_dist/work/input.nml b/developer_tests/normal_dist/work/input.nml
new file mode 100644
index 000000000..83525855e
--- /dev/null
+++ b/developer_tests/normal_dist/work/input.nml
@@ -0,0 +1,13 @@
+&utilities_nml
+   module_details = .false.
+   /
+
+&preprocess_nml
+   input_obs_qty_mod_file  = '../../../assimilation_code/modules/observations/DEFAULT_obs_kind_mod.F90'
+   output_obs_qty_mod_file = '../../../assimilation_code/modules/observations/obs_kind_mod.f90'
+   input_obs_def_mod_file  = '../../../observations/forward_operators/DEFAULT_obs_def_mod.F90'
+   output_obs_def_mod_file = '../../../observations/forward_operators/obs_def_mod.f90'
+   obs_type_files          = '../../../observations/forward_operators/obs_def_gps_mod.f90'
+   quantity_files          = '../../../assimilation_code/modules/observations/default_quantities_mod.f90'
+   / 
+
diff --git a/developer_tests/normal_dist/work/quickbuild.sh b/developer_tests/normal_dist/work/quickbuild.sh
new file mode 100755
index 000000000..2570f489c
--- /dev/null
+++ b/developer_tests/normal_dist/work/quickbuild.sh
@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+
+# DART software - Copyright UCAR. This open source software is provided
+# by UCAR, "as is", without charge, subject to all terms of use at
+# http://www.image.ucar.edu/DAReS/DART/DART_download
+
+main() {
+
+
+export DART=$(git rev-parse --show-toplevel)
+source "$DART"/build_templates/buildfunctions.sh
+
+MODEL="none"
+EXTRA="$DART"/models/template/threed_model_mod.f90
+dev_test=1
+LOCATION="threed_sphere"
+TEST="normal_dist"
+
+serial_programs=(
+test_normal_dist
+)
+
+# quickbuild arguments
+arguments "$@"
+
+# clean the directory
+\rm -f -- *.o *.mod Makefile .cppdefs
+
+# build and run preprocess before making any other DART executables
+buildpreprocess
+
+# build DART
+buildit
+
+# clean up
+\rm -f -- *.o *.mod
+
+}
+
+main "$@"