diff --git a/src/assets/stylesheets/Project.scss b/src/assets/stylesheets/Project.scss
index 207b2b318..5da294adb 100644
--- a/src/assets/stylesheets/Project.scss
+++ b/src/assets/stylesheets/Project.scss
@@ -1,4 +1,5 @@
 @use "./ScratchContainer";
+@use "./sizes" as *;
 
 .proj {
   display: flex;
@@ -34,7 +35,7 @@
   flex-direction: row;
   overflow-y: hidden;
 
-  --resize-handle-size: 16px;
+  --resize-handle-size: #{$resize-handle-size};
 
   gap: var(--resize-handle-size);
   margin-block-start: var(--editor-margin-block-start, var(--space-2));
diff --git a/src/assets/stylesheets/Sidebar.scss b/src/assets/stylesheets/Sidebar.scss
index d2d5d3307..4b87f4b63 100644
--- a/src/assets/stylesheets/Sidebar.scss
+++ b/src/assets/stylesheets/Sidebar.scss
@@ -1,6 +1,12 @@
 @use "@raspberrypifoundation/design-system-core/scss/mixins/typography";
 @use "./rpf_design_system/mixins" as *;
-@use "./breakpoints" as *;
+@use "./sizes" as *;
+
+$sidebar-min-width: 350px;
+$block-editor-min-width: 1024px;
+$small-sidebar-breakpoint: calc(
+  $sidebar-min-width + $block-editor-min-width + $resize-handle-size
+);
 
 /* Sidebar */
 .sidebar {
@@ -28,7 +34,7 @@
   margin: var(--space-1-5);
   display: var(--editor-logo-display, inherit);
 
-  @include unique-max-width($stacked-editor-max-width) {
+  @include unique-max-width($small-sidebar-breakpoint) {
     block-size: var(--space-4);
     inline-size: var(--space-4);
     margin: var(--space-1) var(--space-0-5);
@@ -87,7 +93,7 @@
   padding: var(--space-1);
   border: 1px solid transparent;
 
-  @include unique-max-width($stacked-editor-max-width) {
+  @include unique-max-width($small-sidebar-breakpoint) {
     padding: var(--space-0-5);
   }
 
@@ -108,7 +114,7 @@
       block-size: 60px;
       background-color: var(--sidebar-panel-background);
 
-      @include unique-max-width($stacked-editor-max-width) {
+      @include unique-max-width($small-sidebar-breakpoint) {
         inset-block: -4px -1px;
         inset-inline-end: -8px;
         block-size: 40px;
@@ -136,7 +142,7 @@
     margin: 0;
   }
 
-  @include unique-max-width($stacked-editor-max-width) {
+  @include unique-max-width($small-sidebar-breakpoint) {
     &.btn {
       min-block-size: 32px;
       min-inline-size: 32px;
diff --git a/src/assets/stylesheets/_breakpoints.scss b/src/assets/stylesheets/_breakpoints.scss
deleted file mode 100644
index ac07cac02..000000000
--- a/src/assets/stylesheets/_breakpoints.scss
+++ /dev/null
@@ -1 +0,0 @@
-$stacked-editor-max-width: 1146px;
diff --git a/src/assets/stylesheets/_sizes.scss b/src/assets/stylesheets/_sizes.scss
new file mode 100644
index 000000000..f0d8f32a3
--- /dev/null
+++ b/src/assets/stylesheets/_sizes.scss
@@ -0,0 +1 @@
+$resize-handle-size: 16px;
diff --git a/src/components/Menus/Sidebar/InstructionsPanel/InstructionsPanel.test.jsx b/src/components/Menus/Sidebar/InstructionsPanel/InstructionsPanel.test.jsx
index 218233655..0ab6cd50c 100644
--- a/src/components/Menus/Sidebar/InstructionsPanel/InstructionsPanel.test.jsx
+++ b/src/components/Menus/Sidebar/InstructionsPanel/InstructionsPanel.test.jsx
@@ -558,6 +558,7 @@ describe("When instructions are not editable", () => {
       renderWithProviders(<InstructionsPanel />, {
         preloadedState: {
           editor: {
+            project: {},
             instructionsEditable: false,
           },
           instructions: {
diff --git a/src/components/Menus/Sidebar/SettingsPanel/SettingsPanel.test.jsx b/src/components/Menus/Sidebar/SettingsPanel/SettingsPanel.test.jsx
index dca618836..c69ba9863 100644
--- a/src/components/Menus/Sidebar/SettingsPanel/SettingsPanel.test.jsx
+++ b/src/components/Menus/Sidebar/SettingsPanel/SettingsPanel.test.jsx
@@ -13,6 +13,7 @@ describe("Settings panel", () => {
       const mockStore = configureStore(middlewares);
       const initialState = {
         editor: {
+          project: {},
           isThemeable: true,
         },
       };
@@ -46,6 +47,7 @@ describe("Settings panel", () => {
       const mockStore = configureStore(middlewares);
       const initialState = {
         editor: {
+          project: {},
           isThemeable: false,
         },
       };
diff --git a/src/components/Menus/Sidebar/SidebarPanel.jsx b/src/components/Menus/Sidebar/SidebarPanel.jsx
index 4b4ff8b9b..b0c1712d1 100644
--- a/src/components/Menus/Sidebar/SidebarPanel.jsx
+++ b/src/components/Menus/Sidebar/SidebarPanel.jsx
@@ -1,11 +1,9 @@
 import React, { useContext, useState } from "react";
 import ResizableWithHandle from "../../../utils/ResizableWithHandle";
+import { useSelector } from "react-redux";
 import classNames from "classnames";
 import PropTypes from "prop-types";
-import {
-  MOBILE_MEDIA_QUERY,
-  SMALL_SCREEN_MEDIA_QUERY,
-} from "../../../utils/mediaQueryBreakpoints";
+import { MOBILE_MEDIA_QUERY } from "../../../utils/mediaQueryBreakpoints";
 import { useMediaQuery } from "react-responsive";
 import {
   SidebarActiveOptionContext,
@@ -15,6 +13,20 @@ import {
 
 const MIN_WIDTH = "280px";
 
+export const SMALL_SIDEBAR_PROJECT_TYPE_BREAKPOINTS = {
+  code_editor_scratch: "(max-width: 1430px)",
+};
+
+export const SMALL_SIDEBAR_PROJECT_TYPE = "(max-width: 1146px)";
+
+export const sidebarStartingWidth = (projectType, defaultWidth) => {
+  const breakpoint =
+    SMALL_SIDEBAR_PROJECT_TYPE_BREAKPOINTS[projectType] ||
+    SMALL_SIDEBAR_PROJECT_TYPE;
+
+  return window.matchMedia(breakpoint).matches ? MIN_WIDTH : defaultWidth;
+};
+
 const SidebarPanel = (props) => {
   const {
     children,
@@ -26,6 +38,7 @@ const SidebarPanel = (props) => {
     panelRef,
     defaultWidth = "320px",
   } = props;
+  const projectType = useSelector((state) => state.editor.project.project_type);
   const activeOption = useContext(SidebarActiveOptionContext);
   const tabpanelProps = activeOption
     ? {
@@ -36,10 +49,8 @@ const SidebarPanel = (props) => {
       }
     : {};
   const isMobile = useMediaQuery({ query: MOBILE_MEDIA_QUERY });
-  const [initialWidth] = useState(() =>
-    window.matchMedia(SMALL_SCREEN_MEDIA_QUERY).matches
-      ? MIN_WIDTH
-      : defaultWidth,
+  const [initialWidth] = useState(
+    sidebarStartingWidth(projectType, defaultWidth),
   );
 
   const buttonsIsEmptyArray =
diff --git a/src/components/Menus/Sidebar/SidebarPanel.test.jsx b/src/components/Menus/Sidebar/SidebarPanel.test.jsx
index 38b30ca3a..56e61635a 100644
--- a/src/components/Menus/Sidebar/SidebarPanel.test.jsx
+++ b/src/components/Menus/Sidebar/SidebarPanel.test.jsx
@@ -1,32 +1,38 @@
 import React from "react";
-import { render, screen } from "@testing-library/react";
-import SidebarPanel from "./SidebarPanel";
-import { SMALL_SCREEN_MEDIA_QUERY } from "../../../utils/mediaQueryBreakpoints";
+import { screen } from "@testing-library/react";
+import { renderWithProviders } from "../../../utils/renderWithProviders";
+import SidebarPanel, {
+  SMALL_SIDEBAR_PROJECT_TYPE,
+  SMALL_SIDEBAR_PROJECT_TYPE_BREAKPOINTS,
+} from "./SidebarPanel";
 
 const Footer = () => <p>footer</p>;
 
-beforeEach(() => {
-  render(
-    <SidebarPanel heading="heading" Footer={Footer}>
-      some content
-    </SidebarPanel>,
-  );
-});
-
 test("Renders heading", () => {
+  renderWithProviders(
+    <SidebarPanel heading="heading">some content</SidebarPanel>,
+  );
   expect(screen.queryByText("heading")).toBeInTheDocument();
 });
 
 test("Renders content", () => {
+  renderWithProviders(
+    <SidebarPanel heading="heading">some content</SidebarPanel>,
+  );
   expect(screen.queryByText("some content")).toBeInTheDocument();
 });
 
 test("Renders footer", () => {
+  renderWithProviders(
+    <SidebarPanel heading="heading" Footer={Footer}>
+      some content
+    </SidebarPanel>,
+  );
   expect(screen.queryByText("footer")).toBeInTheDocument();
 });
 
 test("Renders a single button", () => {
-  render(
+  renderWithProviders(
     <SidebarPanel heading="heading" buttons={[<button key="1">button</button>]}>
       some content
     </SidebarPanel>,
@@ -35,7 +41,7 @@ test("Renders a single button", () => {
 });
 
 test("Renders arbitrary header content", () => {
-  render(
+  renderWithProviders(
     <SidebarPanel heading="heading" headerContent={<a href="/x">a link</a>}>
       some content
     </SidebarPanel>,
@@ -44,7 +50,7 @@ test("Renders arbitrary header content", () => {
 });
 
 test("Renders header content alongside buttons", () => {
-  render(
+  renderWithProviders(
     <SidebarPanel
       heading="heading"
       buttons={[<button key="1">button</button>]}
@@ -58,7 +64,7 @@ test("Renders header content alongside buttons", () => {
 });
 
 test("Renders multiple buttons", () => {
-  render(
+  renderWithProviders(
     <SidebarPanel
       heading="heading"
       buttons={[
@@ -76,10 +82,10 @@ test("Renders multiple buttons", () => {
 describe("Default width", () => {
   const originalMatchMedia = window.matchMedia;
 
-  const mockSmallScreen = (matches) => {
+  const mockMatchingMediaQuery = (matchingQuery) => {
     window.matchMedia = (query) => ({
       ...originalMatchMedia(query),
-      matches: matches && query === SMALL_SCREEN_MEDIA_QUERY,
+      matches: query === matchingQuery,
     });
   };
 
@@ -88,27 +94,68 @@ describe("Default width", () => {
   });
 
   test("Uses the default width on larger screens", () => {
-    mockSmallScreen(false);
-    render(<SidebarPanel heading="wide panel">some content</SidebarPanel>);
-    const panel = screen.getAllByTestId("sidebar__panel").at(-1);
-    expect(panel).toHaveStyle({ width: "320px" });
+    mockMatchingMediaQuery(null);
+    renderWithProviders(
+      <SidebarPanel heading="wide panel">some content</SidebarPanel>,
+    );
+    expect(screen.getByTestId("sidebar__panel")).toHaveStyle({
+      width: "320px",
+    });
   });
 
   test("Uses the minimum width on smaller screens", () => {
-    mockSmallScreen(true);
-    render(<SidebarPanel heading="narrow panel">some content</SidebarPanel>);
-    const panel = screen.getAllByTestId("sidebar__panel").at(-1);
-    expect(panel).toHaveStyle({ width: "280px" });
+    mockMatchingMediaQuery(SMALL_SIDEBAR_PROJECT_TYPE);
+    renderWithProviders(
+      <SidebarPanel heading="narrow panel">some content</SidebarPanel>,
+    );
+    expect(screen.getByTestId("sidebar__panel")).toHaveStyle({
+      width: "280px",
+    });
+  });
+
+  test("Uses the minimum width sooner for project types that need more room", () => {
+    mockMatchingMediaQuery(
+      SMALL_SIDEBAR_PROJECT_TYPE_BREAKPOINTS.code_editor_scratch,
+    );
+    renderWithProviders(
+      <SidebarPanel heading="scratch panel">some content</SidebarPanel>,
+      {
+        preloadedState: {
+          editor: { project: { project_type: "code_editor_scratch" } },
+        },
+      },
+    );
+    expect(screen.getByTestId("sidebar__panel")).toHaveStyle({
+      width: "280px",
+    });
+  });
+
+  test("Uses the default width at that same size for other project types", () => {
+    mockMatchingMediaQuery(
+      SMALL_SIDEBAR_PROJECT_TYPE_BREAKPOINTS.code_editor_scratch,
+    );
+    renderWithProviders(
+      <SidebarPanel heading="python panel">some content</SidebarPanel>,
+      {
+        preloadedState: {
+          editor: { project: { project_type: "python" } },
+        },
+      },
+    );
+    expect(screen.getByTestId("sidebar__panel")).toHaveStyle({
+      width: "320px",
+    });
   });
 
   test("Keeps its width when the screen size changes", () => {
-    mockSmallScreen(true);
-    const { rerender } = render(
+    mockMatchingMediaQuery(SMALL_SIDEBAR_PROJECT_TYPE);
+    const { rerender } = renderWithProviders(
       <SidebarPanel heading="resized panel">some content</SidebarPanel>,
     );
-    mockSmallScreen(false);
+    mockMatchingMediaQuery(null);
     rerender(<SidebarPanel heading="resized panel">some content</SidebarPanel>);
-    const panel = screen.getAllByTestId("sidebar__panel").at(-1);
-    expect(panel).toHaveStyle({ width: "280px" });
+    expect(screen.getByTestId("sidebar__panel")).toHaveStyle({
+      width: "280px",
+    });
   });
 });
diff --git a/src/utils/mediaQueryBreakpoints.js b/src/utils/mediaQueryBreakpoints.js
index 6f60bb927..1da98634b 100644
--- a/src/utils/mediaQueryBreakpoints.js
+++ b/src/utils/mediaQueryBreakpoints.js
@@ -1,4 +1,2 @@
 export const MOBILE_BREAKPOINT = "600px";
 export const MOBILE_MEDIA_QUERY = `(max-width: ${MOBILE_BREAKPOINT})`;
-export const SMALL_SCREEN_BREAKPOINT = "1146px";
-export const SMALL_SCREEN_MEDIA_QUERY = `(max-width: ${SMALL_SCREEN_BREAKPOINT})`;