diff --git a/client/utils/build-challenges.js b/client/utils/build-challenges.js
index e09c8d61467..948631afd51 100644
--- a/client/utils/build-challenges.js
+++ b/client/utils/build-challenges.js
@@ -2,10 +2,6 @@ const path = require('path');
 
 const _ = require('lodash');
 
-const {
-  getChallengesForLang
-} = require('@freecodecamp/curriculum/get-challenges');
-
 const {
   getBlockCreator,
   getSuperblocks,
@@ -14,12 +10,14 @@ const {
 const {
   getContentDir,
   getBlockStructure,
-  getSuperblockStructure
+  getSuperblockStructure,
+  CURRICULUM_DIR
 } = require('@freecodecamp/curriculum/file-handler');
 const {
   transformSuperBlock
 } = require('@freecodecamp/curriculum/build-superblock');
 const { getSuperOrder } = require('@freecodecamp/curriculum/super-order');
+const { readFile } = require('fs/promises');
 
 const curriculumLocale = process.env.CURRICULUM_LOCALE || 'english';
 
@@ -72,7 +70,12 @@ exports.replaceChallengeNodes = () => {
 };
 
 exports.buildChallenges = async function buildChallenges() {
-  const curriculum = await getChallengesForLang(curriculumLocale);
+  const curriculum = JSON.parse(
+    await readFile(
+      path.resolve(CURRICULUM_DIR, 'generated', 'curriculum.json'),
+      'utf-8'
+    )
+  );
   const superBlocks = Object.keys(curriculum);
   const blocks = superBlocks
     .map(superBlock => curriculum[superBlock].blocks)
diff --git a/curriculum/src/config.ts b/curriculum/src/config.ts
index 20cd146e828..34001a9816b 100644
--- a/curriculum/src/config.ts
+++ b/curriculum/src/config.ts
@@ -1,4 +1,5 @@
-import { resolve } from 'path';
+import { resolve } from 'node:path';
+import assert from 'node:assert';
 import { config } from 'dotenv';
 
 import { availableLangs } from '@freecodecamp/shared/config/i18n';
@@ -7,20 +8,15 @@ config({ path: resolve(__dirname, '../../.env') });
 
 const curriculumLangs = availableLangs.curriculum;
 
-// checks that the CURRICULUM_LOCALE exists and is an available language
-export function testedLang() {
-  if (process.env.CURRICULUM_LOCALE) {
-    if (curriculumLangs.includes(process.env.CURRICULUM_LOCALE)) {
-      return process.env.CURRICULUM_LOCALE;
-    } else {
-      throw Error(`${process.env.CURRICULUM_LOCALE} is not a supported language.
-      Before the site can be built, this language needs to be manually approved`);
-    }
-  } else {
-    throw Error('CURRICULUM_LOCALE must be set for testing');
-  }
+function isAllowedLang(lang: string): lang is (typeof curriculumLangs)[number] {
+  return curriculumLangs.includes(lang as (typeof curriculumLangs)[number]);
 }
 
+assert.ok(process.env.CURRICULUM_LOCALE);
+assert.ok(isAllowedLang(process.env.CURRICULUM_LOCALE));
+
+export const CURRICULUM_LOCALE = process.env.CURRICULUM_LOCALE;
+
 export const SHOW_UPCOMING_CHANGES =
   process.env.SHOW_UPCOMING_CHANGES === 'true';
 
diff --git a/curriculum/src/file-handler.ts b/curriculum/src/file-handler.ts
index fc248f7b11d..9dd72174e67 100644
--- a/curriculum/src/file-handler.ts
+++ b/curriculum/src/file-handler.ts
@@ -26,7 +26,7 @@ if (typeof __dirname !== 'undefined') {
   __dirnameCompat = dirname(fileURLToPath(metaUrl));
 }
 
-const CURRICULUM_DIR = resolve(__dirnameCompat, '..');
+export const CURRICULUM_DIR = resolve(__dirnameCompat, '..');
 const I18N_CURRICULUM_DIR = resolve(
   CURRICULUM_DIR,
   'i18n-curriculum',
diff --git a/curriculum/src/generate/build-curriculum.ts b/curriculum/src/generate/build-curriculum.ts
index 38973f25c61..873aac408b3 100644
--- a/curriculum/src/generate/build-curriculum.ts
+++ b/curriculum/src/generate/build-curriculum.ts
@@ -2,10 +2,11 @@ import fs from 'fs';
 import path from 'path';
 
 import { getChallengesForLang } from '../get-challenges';
+import { CURRICULUM_LOCALE } from '../config';
 
 const globalConfigPath = path.resolve(__dirname, '../../generated/');
 
-void getChallengesForLang('english')
+void getChallengesForLang(CURRICULUM_LOCALE)
   .then(JSON.stringify)
   .then(json => {
     fs.mkdirSync(globalConfigPath, { recursive: true });
diff --git a/curriculum/src/lint-localized.ts b/curriculum/src/lint-localized.ts
index 4cd1299afdc..c8572c76007 100644
--- a/curriculum/src/lint-localized.ts
+++ b/curriculum/src/lint-localized.ts
@@ -1,8 +1,8 @@
 import path from 'node:path';
 import { configure } from '@freecodecamp/challenge-linter';
-import { testedLang } from './config';
+import { CURRICULUM_LOCALE } from './config';
 
 const CONFIG_PATH = path.resolve(__dirname, '../challenges/.markdownlint.yaml');
 const { lintAll } = configure(CONFIG_PATH);
 
-lintAll(`challenges/${testedLang()}/**/*.md`);
+lintAll(`challenges/${CURRICULUM_LOCALE}/**/*.md`);
diff --git a/curriculum/src/test/daily-challenges.test.js b/curriculum/src/test/daily-challenges.test.js
index cdc56e5527a..3d538124fe1 100644
--- a/curriculum/src/test/daily-challenges.test.js
+++ b/curriculum/src/test/daily-challenges.test.js
@@ -4,12 +4,11 @@ vi.stubEnv('SHOW_UPCOMING_CHANGES', 'true');
 
 // We need to use dynamic imports here to ensure the environment variable is set
 // before the module is loaded.
-const { testedLang } = await import('../config.js');
+const { CURRICULUM_LOCALE } = await import('../config.js');
 const { getChallenges } = await import('./test-challenges.js');
 
 describe('Daily Coding Challenges', async () => {
-  const lang = testedLang();
-  const challenges = await getChallenges(lang, {
+  const challenges = await getChallenges(CURRICULUM_LOCALE, {
     superBlock: 'dev-playground'
   });
 
@@ -57,7 +56,7 @@ describe('Daily Coding Challenges', async () => {
       }
 
       // skip these for non-English for now.
-      if (lang !== 'english') continue;
+      if (CURRICULUM_LOCALE !== 'english') continue;
 
       if (jsChallenge.title !== pyChallenge.title) {
         errors.push(
diff --git a/curriculum/src/test/test-challenges.js b/curriculum/src/test/test-challenges.js
index 9db5891a9df..3960c251b21 100644
--- a/curriculum/src/test/test-challenges.js
+++ b/curriculum/src/test/test-challenges.js
@@ -16,7 +16,7 @@ import { challengeSchemaValidator } from '../../schema/challenge-schema.js';
 import { curriculumSchemaValidator } from '../../schema/curriculum-schema.js';
 import { validateMetaSchema } from '../../schema/meta-schema.js';
 import { getBlockStructure } from '../file-handler.js';
-import { FCC_CHALLENGE_ID, testedLang } from '../config.js';
+import { FCC_CHALLENGE_ID, CURRICULUM_LOCALE } from '../config.js';
 import ChallengeTitles from './utils/challenge-titles.js';
 import MongoIds from './utils/mongo-ids.js';
 import createPseudoWorker from './utils/pseudo-worker.js';
@@ -79,8 +79,7 @@ async function newPageContext() {
 }
 
 export async function defineTestsForBlock(testFilter) {
-  const lang = testedLang();
-  const challenges = await getChallenges(lang, testFilter);
+  const challenges = await getChallenges(CURRICULUM_LOCALE, testFilter);
   const nonCertificationChallenges = challenges.filter(
     ({ challengeType }) => challengeType !== 7
   );
@@ -107,7 +106,7 @@ export async function defineTestsForBlock(testFilter) {
     }
   }
 
-  const challengeData = { meta, challenges, lang };
+  const challengeData = { meta, challenges, lang: CURRICULUM_LOCALE };
 
   describe('Check challenges', async () => {
     beforeAll(async () => {
diff --git a/curriculum/turbo.json b/curriculum/turbo.json
index 77b0fdd98af..0b21130b7db 100644
--- a/curriculum/turbo.json
+++ b/curriculum/turbo.json
@@ -4,7 +4,7 @@
   "tasks": {
     "build": {
       "outputs": ["dist/**", "generated/**"],
-      "env": ["FCC_*", "SHOW_UPCOMING_CHANGES"]
+      "env": ["FCC_*", "SHOW_UPCOMING_CHANGES", "CURRICULUM_LOCALE"]
     },
     "test": {
       "passThroughEnv": ["VITEST_POOL_ID", "PUPPETEER_WS_ENDPOINT"],
diff --git a/docker/api/Dockerfile b/docker/api/Dockerfile
index 61beabfbdf6..86e76a2bd93 100644
--- a/docker/api/Dockerfile
+++ b/docker/api/Dockerfile
@@ -26,6 +26,8 @@ RUN cd api && pnpm prisma generate
 # following env vars.
 ARG SHOW_UPCOMING_CHANGES=false
 ENV SHOW_UPCOMING_CHANGES=$SHOW_UPCOMING_CHANGES
+ARG CURRICULUM_LOCALE=english
+ENV CURRICULUM_LOCALE=$CURRICULUM_LOCALE
 
 RUN pnpm turbo -F=@freecodecamp/api build
 
diff --git a/tools/challenge-helper-scripts/turbo.json b/tools/challenge-helper-scripts/turbo.json
new file mode 100644
index 00000000000..abbf5e13935
--- /dev/null
+++ b/tools/challenge-helper-scripts/turbo.json
@@ -0,0 +1,9 @@
+{
+  "$schema": "https://v2-8-7.turborepo.dev/schema.json",
+  "extends": ["//"],
+  "tasks": {
+    "test": {
+      "env": ["CURRICULUM_LOCALE", "SHOW_UPCOMING_CHANGES"]
+    }
+  }
+}