diff --git a/.Rbuildignore b/.Rbuildignore
index ab07760..51433e6 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -6,3 +6,4 @@
 ^\.github$
 ^.*\.Rproj$
 ^\.Rproj\.user$
+*.html
\ No newline at end of file
diff --git a/.Rprofile b/.Rprofile
new file mode 100644
index 0000000..45596ac
--- /dev/null
+++ b/.Rprofile
@@ -0,0 +1 @@
+# renv disabled - using DESCRIPTION for dependencies
diff --git a/.github/workflows/deploy-quiz.yml b/.github/workflows/deploy-quiz.yml
new file mode 100644
index 0000000..9c39a64
--- /dev/null
+++ b/.github/workflows/deploy-quiz.yml
@@ -0,0 +1,57 @@
+name: Deploy Quiz to shinyapps.io
+
+on:
+  push:
+    branches: [main, dev]
+  workflow_dispatch:  # Allow manual deployment
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    
+    env:
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+      
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        
+      - name: Setup R
+        uses: r-lib/actions/setup-r@v2
+        with:
+          r-version: '4.4.0'
+          use-public-rspm: true
+          
+      - name: Setup Pandoc
+        uses: r-lib/actions/setup-pandoc@v2
+        
+      - name: Install dependencies from DESCRIPTION
+        uses: r-lib/actions/setup-r-dependencies@v2
+        with:
+          dependencies: '"hard"'  # Install Imports, Depends, LinkingTo
+        
+      - name: Configure rsconnect authentication
+        run: |
+          rsconnect::setAccountInfo(
+            name = '${{ secrets.SHINYAPPS_ACCOUNT }}',
+            token = '${{ secrets.SHINYAPPS_TOKEN }}',
+            secret = '${{ secrets.SHINYAPPS_SECRET }}'
+          )
+        shell: Rscript {0}
+        
+      - name: Run build script
+        run: |
+          cat("🚀 Starting deployment process...\n")
+          source("build.R")
+          cat("✅ All deployments completed successfully!\n")
+        shell: Rscript {0}
+        
+      - name: Upload deployment logs
+        uses: actions/upload-artifact@v4
+        if: failure()
+        with:
+          name: deployment-logs-${{ github.run_id }}
+          path: |
+            *.log
+            rsconnect/
+            modules/rsconnect/
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index aca3d20..ce3638b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,4 +8,12 @@
 _freeze/
 docs/
 !docs/*.md
-*.dcf
\ No newline at end of file
+*.dcf
+*.html
+
+# renv - using DESCRIPTION for dependencies instead
+renv/
+renv.lock
+
+# Shiny deployment
+rsconnect/
\ No newline at end of file
diff --git a/DESCRIPTION b/DESCRIPTION
index 50c3cfd..3aa495c 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -13,12 +13,19 @@ URL: https://github.com/ds4owd-dev/quiz,
 BugReports: https://github.com/ds4owd-dev/quiz/issues
 Imports:
     learnr,
-    tidyverse,
+    dplyr,
     gapminder,
     gt,
-    gradethis
+    gradethis,
+    learnrhash,
+    httr,
+    knitr,
+    rmarkdown,
+    shiny,
+    bslib,
+    rsconnect
 Suggests:
-    pkgdown,
-    quarto
+    pkgdown
 Remotes:
-    rstudio/gradethis
+    rstudio/gradethis,
+    rundel/learnrhash
diff --git a/README.md b/README.md
index 1343cdc..1566db8 100644
--- a/README.md
+++ b/README.md
@@ -78,6 +78,46 @@ The quizzes now include automatic submission to Google Forms for tracking studen
 
 ## Deployment Process
 
+### Automated Deployment (CI/CD)
+
+Quizzes are automatically deployed to shinyapps.io via GitHub Actions when changes are pushed to the `main` or `dev` branches.
+
+#### Setting Up Automated Deployment
+
+1. **Get shinyapps.io credentials**:
+   - Go to [shinyapps.io](https://www.shinyapps.io/) → Account → Tokens
+   - Click "Add Token" to generate new credentials
+   - Copy the `name`, `token`, and `secret` values
+
+2. **Configure GitHub Secrets**:
+   - Go to your GitHub repository → Settings → Secrets and variables → Actions
+   - Add these repository secrets:
+     - `SHINYAPPS_ACCOUNT`: Your shinyapps.io account name
+     - `SHINYAPPS_TOKEN`: The token from shinyapps.io  
+     - `SHINYAPPS_SECRET`: The secret from shinyapps.io
+
+3. **Add new quizzes to automated deployment**:
+   - Edit `build.R` and add your new quiz:
+   ```r
+   # Deploy new quiz module
+   rsconnect::deployDoc(
+     doc = "modules/md-02-quiz.Rmd",
+     appName = "openwashdata-module2-quiz", 
+     forceUpdate = TRUE
+   )
+   ```
+
+#### How the CI/CD Workflow Works
+
+The GitHub Action (`.github/workflows/deploy-quiz.yml`):
+- **Triggers**: On pushes to `main`/`dev` branches or manual workflow dispatch
+- **Environment**: Sets up R 4.3.2 with required packages from DESCRIPTION
+- **Authentication**: Uses repository secrets to authenticate with shinyapps.io
+- **Deployment**: Executes `build.R` to deploy all applications defined there
+- **Logging**: Uploads deployment logs if any failures occur
+
+### Manual Deployment
+
 This quiz system uses a two-part deployment approach:
 
 ### 1. Deploy Individual Quizzes
diff --git a/build.R b/build.R
new file mode 100644
index 0000000..b5eeea2
--- /dev/null
+++ b/build.R
@@ -0,0 +1,18 @@
+rsconnect::deployApp(
+  appName = "openwashdata-quiz-hub",
+  forceUpdate = TRUE
+)
+
+rsconnect::deployDoc(
+  doc = "modules/md-01-quiz.Rmd",
+  appName = "openwashdata-module1-quiz",
+  forceUpdate = TRUE
+)
+
+# Example of what to add when creating new quiz:
+
+#rsconnect::deployDoc(
+#  doc = "modules/md-02-quiz.Rmd",
+#  appName = "openwashdata-module2-quiz",
+#  forceUpdate = TRUE
+#)
diff --git a/modules/_github_username.Rmd b/modules/_github_username.Rmd
index 27b9cad..b8370d6 100644
--- a/modules/_github_username.Rmd
+++ b/modules/_github_username.Rmd
@@ -1,3 +1,112 @@
+```{r github-username-setup, include=FALSE}
+# Read GitHub usernames from CSV
+tryCatch({
+  github_users <- read.csv("github_usernames.csv", stringsAsFactors = FALSE)
+  # Create choices with display format: "First Last (username)"
+  username_choices <- setNames(
+    github_users$GitHub.Username,
+    paste0(github_users$First.Name, " ", github_users$Last.Name, " (", github_users$GitHub.Username, ")")
+  )
+}, error = function(e) {
+  # Fallback if CSV not found
+  username_choices <- character(0)
+})
+```
+
 ```{r github-username, echo=FALSE}
-textInput("github_username", "GitHub Username:", placeholder = "Enter your GitHub username")
+div(
+  selectizeInput(
+    "github_username", 
+    "GitHub Username:", 
+    choices = NULL,  # Start empty for performance
+    options = list(
+      placeholder = "Start typing your name or GitHub username...",
+      maxItems = 1,
+      searchField = c("value", "text"),
+      create = TRUE,  # Allow creating new entries
+      persist = TRUE,  # Keep options persistent
+      closeAfterSelect = TRUE,
+      loadThrottle = 200  # Delay loading to prevent auto-selection
+    )
+  ),
+  # Warning message for new usernames
+  div(id = "username-warning", style = "color: orange; font-size: 12px; margin-top: 5px;"),
+  # Confirmation for new usernames
+  div(id = "username-confirmation", style = "margin-top: 10px;")
+)
+```
+
+```{r, context="server"}
+# Read GitHub usernames in server context
+username_choices <- reactive({
+  tryCatch({
+    github_users <- read.csv("modules/github_usernames.csv", stringsAsFactors = FALSE)
+    # Create choices with display format: "First Last (username)"
+    setNames(
+      github_users$GitHub.Username,
+      paste0(github_users$First.Name, " ", github_users$Last.Name, " (", github_users$GitHub.Username, ")")
+    )
+  }, error = function(e) {
+    # Fallback if CSV not found
+    character(0)
+  })
+})
+
+# Update selectize choices on server side - delay to prevent auto-selection
+observeEvent(session$clientData, {
+  # Small delay to ensure UI is ready before populating choices
+  invalidateLater(500, session)
+  isolate({
+    updateSelectizeInput(
+      session = session,
+      inputId = "github_username",
+      choices = username_choices(),
+      selected = character(0),  # Ensure nothing is pre-selected
+      server = FALSE
+    )
+  })
+}, once = TRUE)
+
+# Validate username and show warning/confirmation
+observeEvent(input$github_username, {
+  if (!is.null(input$github_username) && input$github_username != "") {
+    # Check if username is in the approved list
+    is_approved <- input$github_username %in% username_choices()
+    
+    if (!is_approved) {
+      # Show warning for new username
+      output$`username-warning` <- renderUI({
+        div(
+          style = "color: orange; font-size: 12px; margin-top: 5px;",
+          HTML("⚠️ <strong>Warning:</strong> This username is not in the approved list. Please confirm it's correct.")
+        )
+      })
+      
+      # Show confirmation checkbox
+      output$`username-confirmation` <- renderUI({
+        div(
+          style = "margin-top: 10px;",
+          checkboxInput(
+            "confirm_username", 
+            HTML(paste0("I confirm that <strong>", input$github_username, "</strong> is my correct GitHub username")),
+            value = FALSE
+          )
+        )
+      })
+    } else {
+      # Clear warnings for approved username
+      output$`username-warning` <- renderUI({
+        div(
+          style = "color: green; font-size: 12px; margin-top: 5px;",
+          HTML("✓ Username found in approved list")
+        )
+      })
+      output$`username-confirmation` <- renderUI({})
+    }
+  } else {
+    # Clear all messages when empty
+    output$`username-warning` <- renderUI({})
+    output$`username-confirmation` <- renderUI({})
+  }
+}, ignoreInit = TRUE)
 ```
\ No newline at end of file
diff --git a/modules/github_usernames.csv b/modules/github_usernames.csv
new file mode 100644
index 0000000..ca90856
--- /dev/null
+++ b/modules/github_usernames.csv
@@ -0,0 +1,9 @@
+First Name,Last Name,Email,Registration Time,Approval Status,GitHub Username
+Rainbow,Train,larnsce@gmail.com,08/28/2025 1:36:03 PM,approved,rainbow-train
+John,Doe,john.doe@email.com,08/25/2025 9:15:22 AM,approved,johndoe
+Jane,Smith,jane.smith@email.com,08/26/2025 2:30:45 PM,approved,janesmith
+Alice,Johnson,alice.j@email.com,08/27/2025 11:20:10 AM,approved,alice-johnson
+Bob,Wilson,bob.wilson@email.com,08/27/2025 3:45:33 PM,approved,bobwilson
+Carol,Brown,carol.brown@email.com,08/28/2025 8:12:15 AM,approved,carol-brown
+David,Miller,d.miller@email.com,08/28/2025 10:25:40 AM,approved,davidmiller
+Emily,Davis,emily.davis@email.com,08/28/2025 4:18:22 PM,approved,emily-davis
\ No newline at end of file
diff --git a/modules/md-01-quiz.Rmd b/modules/md-01-quiz.Rmd
index 48dbdf2..f31cab6 100644
--- a/modules/md-01-quiz.Rmd
+++ b/modules/md-01-quiz.Rmd
@@ -9,7 +9,7 @@ tutorial:
 
 ```{r setup, include=FALSE}
 library(learnr)
-library(tidyverse)
+library(dplyr)
 library(gapminder)
 library(knitr)
 library(gradethis)
@@ -88,7 +88,7 @@ question("Which chunk options would you use to hide both code and messages when
 Use the gapminder dataset to create a summary table showing the average life expectancy by continent in 2007:
 
 ```{r create-table-setup}
-library(tidyverse)
+library(dplyr)
 library(gapminder)
 library(knitr)
 ```
@@ -131,7 +131,7 @@ grade_this_code()
 Calculate the mean GDP per capita for Switzerland in 2007:
 
 ```{r inline-code-setup}
-library(tidyverse)
+library(dplyr)
 library(gapminder)
 ```
 
@@ -164,7 +164,7 @@ grade_this_code()
 Create a line plot showing the life expectancy over time for African countries with a population greater than 30 million in 2007:
 
 ```{r visualization-setup}
-library(tidyverse)
+library(dplyr)
 library(gapminder)
 
 # Identify African countries with population > 30 million in 2007