diff --git a/curriculum/src/build-curriculum.ts b/curriculum/src/build-curriculum.ts
index 7f41b721bb2..200cd956288 100644
--- a/curriculum/src/build-curriculum.ts
+++ b/curriculum/src/build-curriculum.ts
@@ -338,13 +338,18 @@ export async function parseCurriculumStructure(filter?: Filter) {
 
 export async function buildCurriculum(lang: string, filters?: Filter) {
   const contentDir = getContentDir(lang);
+  const fccSuperblock = process.env.FCC_SUPERBLOCK;
+
+  const combinedFilters: Filter | undefined = fccSuperblock
+    ? { ...filters, superBlock: fccSuperblock }
+    : filters;
 
   const builder = new SuperblockCreator(
-    getBlockCreator(lang, !isEmpty(filters))
+    getBlockCreator(lang, !isEmpty(combinedFilters))
   );
 
   const { fullSuperblockList, certifications } =
-    await parseCurriculumStructure(filters);
+    await parseCurriculumStructure(combinedFilters);
 
   const fullCurriculum: {
     [key: string]: unknown;
@@ -357,7 +362,6 @@ export async function buildCurriculum(lang: string, filters?: Filter) {
     const superOrder = getSuperOrder(name);
     const upcomingSuperOrder = getSuperOrder(name, true);
 
-    // If a superblock is not in either order list it should not exist.
     if (isUndefined(superOrder) && isUndefined(upcomingSuperOrder)) {
       throw Error(`Invalid superBlock: ${name}`);
     }
@@ -365,8 +369,8 @@ export async function buildCurriculum(lang: string, filters?: Filter) {
   });
 
   for (const superblock of liveSuperblocks) {
-    fullCurriculum[superblock.name] =
-      await builder.processSuperblock(superblock);
+    const processedSuperblock = await builder.processSuperblock(superblock);
+    fullCurriculum[superblock.name] = processedSuperblock;
   }
 
   for (const cert of certifications) {
diff --git a/curriculum/src/utils.ts b/curriculum/src/utils.ts
index 6e2f4396938..4fc355f1f16 100644
--- a/curriculum/src/utils.ts
+++ b/curriculum/src/utils.ts
@@ -73,20 +73,27 @@ export function filterByBlock<T extends { blocks: { dashedName: string }[] }>(
 }
 
 /**
- * Filters the superblocks array to only include the superblock with the specified name.
+ * Filters the superblocks array to only include superblocks with the specified name(s).
  * If no superBlock is provided, returns the original superblocks array.
+ * Supports comma-separated superblock names for filtering multiple superblocks.
  *
  * @param {Array<Object>} superblocks - Array of superblock objects.
  * @param {Object} [options] - Options object
- * @param {string} [options.superBlock] - The name of the superblock to filter for.
- * @returns {Array<Object>} Filtered array of superblocks containing only the specified superblock, or the original array if superBlock is not provided.
+ * @param {string} [options.superBlock] - The name(s) of the superblock(s) to filter for (comma-separated for multiple).
+ * @returns {Array<Object>} Filtered array of superblocks containing only the specified superblock(s), or the original array if superBlock is not provided.
  */
 export function filterBySuperblock<T extends { name: string }>(
   superblocks: T[],
   { superBlock }: { superBlock?: string } = {}
 ): T[] {
   if (!superBlock) return superblocks;
-  return superblocks.filter(({ name }) => name === superBlock);
+
+  const superBlockList = superBlock
+    .split(',')
+    .map(s => s.trim())
+    .filter(s => s.length > 0);
+
+  return superblocks.filter(({ name }) => superBlockList.includes(name));
 }
 
 /**
@@ -175,6 +182,12 @@ export function closestFilters(
 ): Filter | undefined {
   if (target?.superBlock) {
     const superblockNames = superblocks.map(({ name }) => name);
+
+    // If there are multiple superblocks, do not attempt to find a closest match.
+    if (target.superBlock.includes(',')) {
+      return target;
+    }
+
     return {
       ...target,
       superBlock: closestMatch(target.superBlock, superblockNames)
diff --git a/tools/scripts/build/build-curriculum.ts b/tools/scripts/build/build-curriculum.ts
index 56321009e6e..34c1f1a1bea 100644
--- a/tools/scripts/build/build-curriculum.ts
+++ b/tools/scripts/build/build-curriculum.ts
@@ -15,16 +15,23 @@ import {
 
 const globalConfigPath = path.resolve(__dirname, '../../../shared-dist/config');
 
-// We are defaulting to English because the ids for the challenges are same
-// across all languages.
+const isSelectiveBuild = !!process.env.FCC_SUPERBLOCK;
+
 void getChallengesForLang('english')
   .then(result => {
-    buildExtCurriculumDataV1(
-      result as unknown as CurriculumV1<CurriculumPropsV1>
-    );
-    buildExtCurriculumDataV2(
-      result as unknown as CurriculumV2<CurriculumPropsV2>
-    );
+    if (!isSelectiveBuild) {
+      console.log('Building external curriculum data...');
+      buildExtCurriculumDataV1(
+        result as unknown as CurriculumV1<CurriculumPropsV1>
+      );
+      buildExtCurriculumDataV2(
+        result as unknown as CurriculumV2<CurriculumPropsV2>
+      );
+    } else {
+      console.log(
+        'Skipping external curriculum build (selective build mode active)'
+      );
+    }
     return result;
   })
   .then(JSON.stringify)