diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
new file mode 100644
index 0000000..01844d0
--- /dev/null
+++ b/.github/workflows/testing.yml
@@ -0,0 +1,54 @@
+name: Test Classic
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+permissions:
+  contents: read
+
+env:
+  CLAW: ${{ github.workspace }}
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Set up Python 3.10
+      uses: actions/setup-python@v5
+      with:
+        python-version: "3.10"
+    - name: Install dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install gfortran
+        python -m pip install --upgrade pip
+        pip install flake8 meson-python ninja pytest numpy
+
+    - name: Checkout clawpack
+      uses: actions/checkout@v4.1.5
+      with:
+        repository: clawpack/clawpack
+        submodules: true
+    - name: Checkout classic branch
+      uses: actions/checkout@v4.1.5
+      with:
+        repository: clawpack/classic
+        path: classic    
+    - name: Install clawpack
+      run: |
+        pip install --user -e $CLAW
+
+    - name: Lint with flake8
+      run: |
+        cd ${CLAW}/geoclaw
+        # stop the build if there are Python syntax errors or undefined names
+        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+    - name: Test with pytest
+      run: |
+        cd ${CLAW}/classic
+        pytest